I am getting the error "A connection to the Jupyter server could not be established. JupyterLab will continue trying to reconnect. Check your network connection or Jupyter server configuration." in Jupyter Notebook. I have just began to programming and dont know what to da. Can someone help me ?
I have changed my default browser opera to chrome thats the only change maybe thats the reason for the problem ?
Thank you for your helps,
Meryem
I've upgraded tornado 6.0.1 and downloaded ruemel.yaml files which Anaconda Promt said me to do. Activated the enviroment that i ve created before and opened the Jupyter-Lab but nothing didnt work.
Related
I'm a bit puzzled of what goes wrong, and maybe someone here knows, or has had it before.
First, i got Docker on windows 11.
It runs a ubuntu python container, for all kind of AI stuff.
My local windows PC, has Vscode, i've made a connection to the local container (ssh).
When i open a .ipynb I see the raw file a Json like structure.
That is a bit strange because if i create a new ipynb on windows 11
Its is showing code/markdown cells normally like how vscode shows it normally.
VScode should know what Jupiter notebooks are
So Vscode knows python, everything seems installed in relation to jupyter and remote (localhost) connections.
Does anyone know perhaps what is going wrong here?.
Maybe its something i overlooked, missed.
Or some extra step that needs to be done at VScode, or i open it wrongly ?.
I open the file through the left pane open.. as shown:
I believe all related jupyter notebook stuff is installed in VScode
PS C:\python projects\test> code --list-extensions --show-versions
btwiuse.vscode-remote-server#0.0.5
colinfang.my-nbpreviewer#1.2.2
GitHub.copilot#1.56.7152
jithurjacob.nbpreviewer#1.2.2
ms-azuretools.vscode-docker#1.22.2
ms-dotnettools.csharp#1.25.0
ms-python.python#2022.16.1
ms-python.vscode-pylance#2022.10.40
ms-toolsai.jupyter#2022.9.1202862440
ms-toolsai.jupyter-keymap#1.0.0
ms-toolsai.jupyter-renderers#1.0.10
ms-toolsai.vscode-jupyter-cell-tags#0.1.6
ms-toolsai.vscode-jupyter-powertoys#0.0.6
ms-toolsai.vscode-jupyter-slideshow#0.1.5
ms-vscode-remote.remote-containers#0.255.4
ms-vscode-remote.remote-ssh#0.90.1
ms-vscode-remote.remote-ssh-edit#0.84.0
samghelms.jupyter-notebook-vscode#0.0.2
So our team created a new Azure Machine Learning resource, but whenever I try to add a new notebook and try to edit it using "JUPYTERLAB" i get ERR_HTTP2_PROTOCOL_ERROR error, but the same notebook, when edited using EDIT IN JUPYTER works perfectly.
This is a blank and clean notebook, I also tried 2 different laptops and multiple browsers per laptop, same error. I also tried incognito and clearing cookies, but to no avail.
update: I seem to have accidentally replicated the issue and I now know what is causing it, the situation is that Im using my work laptop and constantly switching VPN connections, and some times, connecting to the AZURE PORTAl OUTSIDE the VPN. So, when you've worked on a notebook while inside a VPN, then you disconnected, and tried loading the notebook sometime later, you will encounter this
Have you tried creating a new Azure Machine Learning Compute Instance? Sometimes the VM has a fatal issue and a new one needs to be spun up.
Also try modifying the working Jupyter Notebook url by adding /lab to the end.
This problem has stomped me for hours, but I was finally able to fix it. What I did was I opened a terminal and did a Jupyter lab rebuild "jupyter lab build"
I am trying to connect from google colab to local host - it does not work,
google troubleshooting advise suggests that I should allow local Jupyter notebook to accept colab requests - how to do it ?
Screenshot from local host which confirms that requests from colab are forbidden.
There should be some config modification to allow such requests, is not it ?
Advise from colab:
How I fixed my connection issues:
If after the above commands don't work, what finally did it for me was creating a firewall rule for port 8888.
Another big one that is in the instructions in your command line but not stated on the provided Google tutorial that some people will miss is that you need to open the URL in your browser that's given to you after launching Jupyter in order for it to create the access cookie and make it valid (sort of speak).
From the screenshot you provided, make sure you have "http://localhost:8888/?token=2534..." opened in your browser that is logged in with the same account accessing colab before it will allow access to colab (a separate window or tab will usually pops up on it's own when you run the command though).
Alternatively, you can also add the --no-browser tag to prevent the need to open it in your browser
Other solutions that involve installation issues to mitigate network issues:
There were a number of other troubleshooting steps that were particular to me but dont know if will apply to you but did you have any issues when installing Jupyter?
For me, even though jupyter would still launch, there were errors when installing on Windows, and to fix those I had to replace pip with pipwin and go through the steps that way.
For example
pipwin install jupyterlabs
pipwin install jupyter_http_over_ws
And in case it helps anyone else coming across this in the future, if you're using the DOS cmd line and have issues launching jupyter, replace the "" with a "^" to indicate continuation
i.e.:
jupyter notebook --NotebookApp.allow_origin="https://colab.research.google.com" --port=8888 --NotebookApp.port_retries=0
TCP connections work fine as I am able to converse with someone over zoom and teamviewer. However, whenever I attempt to access another webpage, I get a network error. Google seems to work fine for some reason but any webpage I go to listed by Google fails to connect. The only way I can open up my http connections is by ending a task called "init" inside of task manager. This shuts down my vscode as well as my ubuntu terminals I have running. If someone knows the solution please do tell. It's really annoying having to close out my vscode and terminals as well as my local servers to look up information and debug.
I found a fix to this issue.
So I was running a Windows Subsystem for Linux and my Windows Build was outdated as well as WSL. When I updated Windows and upgraded to WSL2, my issue was resolved and I don't seem to get any more network errors.
Currently I have installed RStudio in Ubuntu server. When I use another linux and windows system to ssh it, I can see the RStudio GUI. However, when I start to use my Macbook to ssh, nothing appears.
the command I entered is
"rstudio"
No error messages appear and no RStudio GUI appears either.
This is really confusing, can anyone give me some suggestions or ideas on what to do?