Javascript Error in VS Code

[ZaraLeclair]

I'm running a Jupyter Notebook in VS Code, while ssh'd into a remote server with the Remote-SSH extension. I ran the below test code, and the cell itself runs without error, but the image does not display, instead says "Click to show javascript error"

When I Click to show javascript error, I get below:

[Open Browser Console for more detailed log - Double click to close this message]
Failed to load model class 'RemoteFrameBufferModel' from module 'jupyter_rfb'
Error: No version of module jupyter_rfb is registered
at WidgetManager.loadClass (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2457634)
at WidgetManager.loadClass (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2841448)
at WidgetManager.loadModelClass (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2454419)
at WidgetManager._make_model (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2452380)
at WidgetManager.new_model (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2450099)
at WidgetManager.handle_comm_open (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2448870)
at https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2840461
at t._handleCommOpen (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-2025.6.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:3:119000)
at async t._handleMessage (https://vscode-remote+ssh-002dremote-002bmycomputenode-002diris-002discb-002d007.vscode-resource.vscode-cdn.net/home/parkj16/.vscode-server/extensions/ms-toolsai.jupyter-2025.6.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:3:120875)

Finally, after I restart VS Code and open the notebook, I see the image displayed correctly, even without having run any code. Help please?

[djhoese]

I'm not really a maintainer of this package in recent years, but thought I could at least ask for more information:

1. Are you able to reproduce this locally (no SSH)?
2. Please provide the environment info for your python environment(s) including versions of packages installed?
3. What operating system is your local machine and what operating system is the remove server?
4. Has this ever worked in the past?

[ZaraLeclair]

Thank you djhoese. No, have not tried locallly. All my data and is on the remote server, I have not even made a setup on my local machine. Local machine OS is MacOS Sonoma 14.7.6, remote server is Linux 4.18.0-425.19.2.el8_7.x86_64 (if that's the right way to put it, I just ran uname -a in Terminal). Jupyter-rfb has not worked for me in past, but this is also first time I've tried it.

Conda environment is installed on the remote server, and packages are:

[almarklein]

Looks like a duplicate of #115 (the issue even has nearly the same name). It looks like support for VSCode is broken right now.

We plan to move to AnyWidget, which would hopefully resolve issues like this ...