I have just started to use virtual environment and tried to create one for Jupyter Notebook, and almost succeeded but when I tried to open a new notebook it gave the error "unable to connect to kernel or server":
Refreshing the browser, clearing the browser cache , restarting anaconda etc also did't fix the problem!
Can you tell me how to fix it?
This happens most times, try restarting anaconda it should fix the server issues, also clear browser cache.
Related
I'am trying to open Jupyter Notebook from Putty. I have a server where is installed Python and Jupyter. I followed all the steps from this post Remote access Jupyter notebook from Windows but it doesn't work. I got the error: This site can't be reached.
Any idea?
Thx
edit: I added a photo with the ps from putty and the error from browser. It's said:
This site can't be reached
.
The good old logout/reboot mechanisms work in this case too!
You can try closing the jupyter connection in the tunnel's connection, logout from the remote server, re-connect and try. Has worked a few times for me today.
If that doesn't work, there might be stale jupyter notebook processes on the remote server. Query for them and kill them and then logout-log back in and try.
If that still does not work, try implementing your code through ipython to check if Jupyter is working at all, even if its user interface isn't loading on your browser.
I just installed Anaconda on y windows 10, but when I try to run the jupyter notebook or jupyter lab by the icon, nothing happend.
Tried to run the jupyter by anaconda prompt and got the error: The port 8888 is already in use, trying another port.
Tried to run in several different ports and the error is the same.
Tried to kill the task by PID and when I run the jupyter again by promp and it lasts forever and nothing happens
Tried to change the browser by manual config and everything is the same
Tried to uninstall anaconda and install again several times and boom: Same errors
I checked also proxy stuff but everything related to this is unable on my pc
Checked firewall and antivirus and also everything seems to be normal
Any other recommendation is welcome :)
As mentioned here you may just change port to other, for example:
jupyter notebook --port 8889
The Jupyter notebook keeps saying Connecting to kernel, which never reaches finally popping an error,
A connection to the notebook server could not be established. The notebook will continue
trying to reconnect. Check your network connection or notebook server
configuration.
So the asterisk on the command line stays forever.
The strange part is, iPython on terminal works FINE.
Here are what I tried:
Change the browser from Chrome to Firefox
Change port number into something else than '8888'
Uninstalled the Jupyter and re-installed it
Anybody with similar issues?
I had a similar issue. It was caused by the tornado-package and I had to downgrade it.
sudo pip3 uninstall tornado
sudo pip3 install tornado==5.1.1
See Jupyter notebook: No connection to server because websocket connection fails
I have found this same issue, and identified it only happens with Chrome standard browser. Incognito Chrome or Firefox does not have the same issue of ipykernel not connecting.
For now I open jupyter in firefox using the following command from Terminal:
jupyter lab --browser Firefox
Not sure what the difference is with the browsers, but recently I have had an issue of not being able to access local files from chrome, so will look into this issue and see if that resolves it for Chrome standard browser.
How to solve this issue of Jupyter extension loaded from C and jupyter application directory is something else.I am unable to use numpy and matplotlib in Jupyter notebook.
this is what I get in Anaconda Prompt
These are the two errors I get 302 and 404 when I host the notebook
This is I got when I run a code in notebook
continued...error I get
It usually happens when the application is not able to initiate or determine a default browser. Just copy the entire link http://localhost:8888/?token=4e558da5a28601f99fbc0f1773a4200c57e89b6d487de19a and paste it in a web browser similar to how you access any web url. Remember, the token changes every time you initiate the jupyter notebook.
I start up Jupyter Notebook from the cmd and it works with no issues. But when I open the localhost, no folders are shown and it just says Server error: error. When I refresh, the folders show up, but immediately after Firefox tells me the script is unresponsive. After a few seconds, the entire browser crashes. What is happening, and is there any way I can fix this?