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Heroku. ImportError: cannot import name 'ugettext_lazy'. How can I edit file into Heroku container?

I have deployed my project to Heroku. But I got "Internal server error"
"ImportError: cannot import name 'ugettext_lazy' from 'django.utils.translation' (/app/.heroku/python/lib/python3.8/site-packages/django/utils/translation/init.py)"
Yes, I know that I should write "gettext_lazy" instead. But I can't find this file in my project. Can I edit code in Heroku container? How?
I got this error only after deploy.
I don't understand where this file is situated.
Help me, please.
Traceback (most recent call last):
File "manage.py", line 22, in <module>
main()
File "manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/__init__.py", line 425, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/__init__.py", line 419, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/base.py", line 373, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/base.py", line 417, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/base.py", line 90, in wrapped
res = handle_func(*args, **kwargs)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/commands/migrate.py", line 75, in handle
self.check(databases=[database])
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/base.py", line 438, in check
all_issues = checks.run_checks(
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/checks/registry.py", line 77, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/app/.heroku/python/lib/python3.8/site-packages/django/core/checks/urls.py", line 23, in check_resolver
return check_method()
File "/app/.heroku/python/lib/python3.8/site-packages/django/urls/resolvers.py", line 446, in check
for pattern in self.url_patterns:
File "/app/.heroku/python/lib/python3.8/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/app/.heroku/python/lib/python3.8/site-packages/django/urls/resolvers.py", line 632, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/app/.heroku/python/lib/python3.8/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/app/.heroku/python/lib/python3.8/site-packages/django/urls/resolvers.py", line 625, in urlconf_module
return import_module(self.urlconf_name)
File "/app/.heroku/python/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/app/Bianka/urls.py", line 28, in <module>
path('', include('bianka_site.urls')),
File "/app/.heroku/python/lib/python3.8/site-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/app/.heroku/python/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/app/bianka_site/urls.py", line 2, in <module>
from . import views
File "/app/bianka_site/views.py", line 8, in <module>
from .forms import CommentForm, LikeForm
File "/app/bianka_site/forms.py", line 3, in <module>
from snowpenguin.django.recaptcha3.fields import ReCaptchaField
File "/app/.heroku/python/lib/python3.8/site-packages/snowpenguin/django/recaptcha3/fields.py", line 7, in <module>
from django.utils.translation import ugettext_lazy as _
ImportError: cannot import name 'ugettext_lazy' from 'django.utils.translation' (/app/.heroku/python/lib/python3.8/site-packages/django/utils/translation/__init__.py)
my requirements.txt
asgiref==3.4.1
backports.zoneinfo==0.2.1
certifi==2021.10.8
charset-normalizer==2.0.10
dj-database-url==0.5.0
Django==4.0
django-ckeditor==6.2.0
django-js-asset==1.2.2
django-modeltranslation==0.17.3
django-recaptcha3==0.4.0
fontawesomefree==6.0.0
gunicorn==20.1.0
idna==3.3
Pillow==8.4.0
psycopg2==2.9.3
requests==2.27.1
six==1.16.0
sqlparse==0.4.2
tzdata==2021.5
urllib3==1.26.7
whitenoise==6.0.0

When I run my Django project developed on Windows on Ubuntu it gives errors as below, even after creating virtualenv and configured properly

Here is the errors
I have installed and created virtualenv as same like the one on Windows and replaced it on Ubuntu with that new one. I could activate the virtual but when I do python3 manage.py runserver it gives error as like below. If someone help, it will be grateful.
Traceback (most recent call last):
File "manage.py", line 22, in <module>
main()
File "manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
utility.execute()
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/base.py", line 354, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 61, in execute
super().execute(*args, **options)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/base.py", line 398, in execute
output = self.handle(*args, **options)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 96, in handle
self.run(**options)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 105, in run
self.inner_run(None, **options)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 118, in inner_run
self.check(display_num_errors=True)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/management/base.py", line 423, in check
databases=databases,
File "/home/pema/.local/lib/python3.6/site-packages/django/core/checks/registry.py", line 76, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/home/pema/.local/lib/python3.6/site-packages/django/core/checks/urls.py", line 23, in check_resolver
return check_method()
File "/home/pema/.local/lib/python3.6/site-packages/django/urls/resolvers.py", line 416, in check
for pattern in self.url_patterns:
File "/home/pema/.local/lib/python3.6/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/pema/.local/lib/python3.6/site-packages/django/urls/resolvers.py", line 602, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/pema/.local/lib/python3.6/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/pema/.local/lib/python3.6/site-packages/django/urls/resolvers.py", line 595, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/pema/Desktop/Django/devsearch/devsearch/urls.py", line 9, in <module>
path("", include("users.urls"))
File "/home/pema/.local/lib/python3.6/site-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/pema/Desktop/Django/devsearch/users/urls.py", line 3, in <module>
from. import views
File "/home/pema/Desktop/Django/devsearch/users/views.py", line 8, in <module>
from .forms import CustomUserCreationForm, ProfileForm, SkillForm
File "/home/pema/Desktop/Django/devsearch/users/forms.py", line 1, in <module>
from dataclasses import fields
ModuleNotFoundError: No module named 'dataclasses'

Data classes were introduced in Python 3.7. You are running Python 3.6.

Django, Can not import urls from django.conf.urls

I am working on django restframework project. I build it and it was working well but then I tried makemigrations and I got following error. Please help me.
File "/code/eventful/manage.py", line 22, in <module>
main()
File "/code/eventful/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.10/site-packages/django/core/management/__init__.py", line 425, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.10/site-packages/django/core/management/__init__.py", line 419, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.10/site-packages/django/core/management/base.py", line 373, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.10/site-packages/django/core/management/base.py", line 412, in execute
self.check()
File "/usr/local/lib/python3.10/site-packages/django/core/management/base.py", line 438, in check
all_issues = checks.run_checks(
File "/usr/local/lib/python3.10/site-packages/django/core/checks/registry.py", line 77, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "/usr/local/lib/python3.10/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/usr/local/lib/python3.10/site-packages/django/core/checks/urls.py", line 23, in check_resolver
return check_method()
File "/usr/local/lib/python3.10/site-packages/django/urls/resolvers.py", line 446, in check
for pattern in self.url_patterns:
File "/usr/local/lib/python3.10/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.10/site-packages/django/urls/resolvers.py", line 632, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python3.10/site-packages/django/utils/functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.10/site-packages/django/urls/resolvers.py", line 625, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/code/eventful/eventful/urls.py", line 25, in <module>
path('api/rest-auth/', include('rest_auth.urls')),
File "/usr/local/lib/python3.10/site-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/usr/local/lib/python3.10/site-packages/rest_auth/urls.py", line 1, in <module>
from django.conf.urls import url
ImportError: cannot import name 'url' from 'django.conf.urls' (/usr/local/lib/python3.10/site-packages/django/conf/urls/__init__.py)
I tried makemigrations for my django project but I have got that error and I do not have any idea about this error. Can anybody help me. Please!

the url was removed in Django 4.0
Look at the release notes here:
https://docs.djangoproject.com/pl/4.0/releases/4.0/#features-removed-in-4-0
django.conf.urls.url() is removed

As of django-4.0, the url function is removed. Indeed, in the release notes we see:
django.conf.urls.url() is removed.
You thus are using rest_auth which is incompatible with the Django version. The django-rest-auth project [GitHub] still uses the url(…) function in the urls.py [GitHub].
You thus should downgrade Django (to django-3.2) to work with the django-rest-auth, or you should wait until the django-rest-auth makes a release that is compatible with django-4.0.

Unable to run the docker image for the ethereum project

I have been trying to run the project
https://github.com/Mattie432/Blockchain-Voting-System
The following steps are given to run the image.
1.Ensure docker is running with sudo service docker start.
2.Build the docker image with docker build -t applicationserver . while in the 2_ApplicationServer directory.
3.Run the docker image with docker run -p
80:80 applicationserver and map the internal port 80 to the localhost
port 80.
But following error is shown while the third step
docker run -p 80:80 applicationserver
[docker_entrypoint] Running database migrations..
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.5/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.5/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 305, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 353, in execute
self.check()
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 385, in check
include_deployment_checks=include_deployment_checks,
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 372, in _run_checks
return checks.run_checks(**kwargs)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/urls.py", line 14, in check_url_config
return check_resolver(resolver)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/urls.py", line 24, in check_resolver
for pattern in resolver.url_patterns:
File "/usr/local/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/site-packages/django/urls/resolvers.py", line 310, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/site-packages/django/urls/resolvers.py", line 303, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/local/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 985, in _gcd_import
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 697, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/usr/src/applicationserver/applicationserver/urls.py", line 22, in <module>
url(r'^', include('website.urls')),
File "/usr/local/lib/python3.5/site-packages/django/conf/urls/__init__.py", line 50, in include
urlconf_module = import_module(urlconf_module)
File "/usr/local/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 985, in _gcd_import
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 697, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/usr/src/applicationserver/website/urls.py", line 19, in <module>
from website.views import (Dashboard, HomepageRedirect)
File "/usr/src/applicationserver/website/views.py", line 7, in <module>
import network.network_calls as NetworkRequest
File "/usr/src/applicationserver/network/network_calls.py", line 14, in <module>
ballotregulator_ip = os.environ[ 'TWISTED_BALLOTREGULATOR_IP' ]
File "/usr/local/lib/python3.5/os.py", line 725, in __getitem__
raise KeyError(key) from None
KeyError: 'TWISTED_BALLOTREGULATOR_IP'
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.5/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.5/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 305, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 353, in execute
self.check()
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 385, in check
include_deployment_checks=include_deployment_checks,
File "/usr/local/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 62, in _run_checks
issues.extend(super(Command, self)._run_checks(**kwargs))
File "/usr/local/lib/python3.5/site-packages/django/core/management/base.py", line 372, in _run_checks
return checks.run_checks(**kwargs)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/urls.py", line 14, in check_url_config
return check_resolver(resolver)
File "/usr/local/lib/python3.5/site-packages/django/core/checks/urls.py", line 24, in check_resolver
for pattern in resolver.url_patterns:
File "/usr/local/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/site-packages/django/urls/resolvers.py", line 310, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/site-packages/django/urls/resolvers.py", line 303, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/local/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 985, in _gcd_import
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 697, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/usr/src/applicationserver/applicationserver/urls.py", line 22, in <module>
url(r'^', include('website.urls')),
File "/usr/local/lib/python3.5/site-packages/django/conf/urls/__init__.py", line 50, in include
urlconf_module = import_module(urlconf_module)
File "/usr/local/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 985, in _gcd_import
File "<frozen importlib._bootstrap>", line 968, in _find_and_load
File "<frozen importlib._bootstrap>", line 957, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 697, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/usr/src/applicationserver/website/urls.py", line 19, in <module>
from website.views import (Dashboard, HomepageRedirect)
File "/usr/src/applicationserver/website/views.py", line 7, in <module>
import network.network_calls as NetworkRequest
File "/usr/src/applicationserver/network/network_calls.py", line 14, in <module>
ballotregulator_ip = os.environ[ 'TWISTED_BALLOTREGULATOR_IP' ]
File "/usr/local/lib/python3.5/os.py", line 725, in __getitem__
raise KeyError(key) from None
KeyError: 'TWISTED_BALLOTREGULATOR_IP'
[docker_entrypoint] Starting server..
[uWSGI] getting INI configuration from wsgi.ini
*** Starting uWSGI 2.0.17 (64bit) on [Thu Mar 8 19:05:51 2018] ***
compiled with version: 4.9.2 on 08 March 2018 19:04:56
os: Linux-4.13.0-21-generic #24-Ubuntu SMP Mon Dec 18 17:29:16 UTC 2017
nodename: 327dd15d563c
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 4
current working directory: /usr/src/applicationserver
detected binary path: /usr/local/bin/uwsgi
chdir() to /usr/src//applicationserver
*** WARNING: you are running uWSGI without its master process manager ***
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: disabled (you can enable it with --thunder-lock)
bind(): No such file or directory [core/socket.c line 230]
Please help me with this.
EDIT : The Service has started using #Alasdair suggestion but how can I now map internal port 80 to localhost port 80

ImportError: No module named 'posts.urls'

I am new to Django and started making my first Django app using django official tutorial from https://docs.djangoproject.com/en/2.0/intro/tutorial01/.
I have installed python3.5.2 and pip 9.0.1, using Ubuntu 16.04, Django version is 2.0.
my urls.py file has following code
from django.contrib import admin
from django.urls import path
from django.conf.urls import url, include
urlpatterns = [
path('posts/', include('posts.urls')),
path('admin/', admin.site.urls),
]
If there is anything you can help me work this out. below is the error i am getting after running command -
python manage.py runserver
here is the error i am getting
Performing system checks...
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7fe20fe92d08>
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/commands/runserver.py", line 120, in inner_run
self.check(display_num_errors=True)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py", line 364, in check
include_deployment_checks=include_deployment_checks,
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py", line 351, in _run_checks
return checks.run_checks(**kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/registry.py", line 73, in run_checks
new_errors = check(app_configs=app_configs)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/urls.py", line 40, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/urls.py", line 57, in _load_all_namespaces
url_patterns = getattr(resolver, 'url_patterns', [])
File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/dist-packages/django/urls/resolvers.py", line 536, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/dist-packages/django/urls/resolvers.py", line 529, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/var/www/html/django-projects/djangoblog/djangoblog/urls.py", line 21, in <module>
path('posts/', include('posts.urls')),
File "/usr/local/lib/python3.5/dist-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
ImportError: No module named 'posts.urls'
Performing system checks...
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f8390058bf8>
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/commands/runserver.py", line 120, in inner_run
self.check(display_num_errors=True)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py", line 364, in check
include_deployment_checks=include_deployment_checks,
File "/usr/local/lib/python3.5/dist-packages/django/core/management/base.py", line 351, in _run_checks
return checks.run_checks(**kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/registry.py", line 73, in run_checks
new_errors = check(app_configs=app_configs)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/urls.py", line 40, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
File "/usr/local/lib/python3.5/dist-packages/django/core/checks/urls.py", line 57, in _load_all_namespaces
url_patterns = getattr(resolver, 'url_patterns', [])
File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/dist-packages/django/urls/resolvers.py", line 536, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py", line 36, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.5/dist-packages/django/urls/resolvers.py", line 529, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/var/www/html/django-projects/djangoblog/djangoblog/urls.py", line 21, in <module>
path('posts/', include('posts.urls')),
File "/usr/local/lib/python3.5/dist-packages/django/urls/conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked
IF there is anything you can help me with. I have already tried every other solution existed on internet yet.

/var/www/html/django-projects/djangoblog/ must be your project root.
If you use an IDE like PyCharm, right click to the "djangoblog"-folder -> Mark Directory as -> Source Root
If you use a shell to run Django:
cd /var/www/html/django-projects/djangoblog/
./manage.py runserver
Hope this works for you.