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Get module not found error while importing from utils_ssd

while executing the following in Jupyter Noteboook
from utils_ssd import *
I get the following error :
ModuleNotFoundError: No module named 'keras.engine.topology'
After I bit of digging I got to know that topology module from keras.engine is now deprecated
So how do I make the above code work?

ModuleNotFoundError: No module named 'pandasgui'

Here is the installation screenshot. However, I see module error when I import pandasgui

ModuleNotFoundError: No module named 'sklearn.ensemble.forest'

I built a classifier classifier_new.pkl using
from sklearn.ensemble import RandomForestClassifier
I pickled this calssifier and then tried to use it for a web application.
import pickle
pickle_in=open('classifier_new.pkl','rb')
After executing this code I got this error message:
ModuleNotFoundError: No module named 'sklearn.ensemble.forest'
What should I do instead or what could I examine in order to make it running?
I also searched for similar questions/answers for this problem and saw this solution: No module name 'sklearn.forest.ensemble' but it did not work in my case...

ModuleNotFoundError: No module named 'pyrouge.utils'; 'pyrouge' is not a package

I have this library in my code:
from pyrouge.utils import log
But I am getting the following error:
ModuleNotFoundError: No module named 'pyrouge.utils';
'pyrouge' is not a package
Though pyrouge in already installed in my system. I tried to find its solution but there are like none results. Can anyone help me here?

No module named 'config' and No module named 'model' in GoogleColab

I tried to import in Colab, but it does not mention the name of a module.
from config import Config
from model import CSRNet
I am writing this code and as a result I get it.
ModuleNotFoundError: No module named 'config'
ModuleNotFoundError: No module named 'model'
How do I fix this problem?

Make you sure have you installed ...for Google colab try with this:
!pip install config