Javascript error sometimes

Javascript error sometimes

at WidgetManager.loadClass (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2457634)
    at WidgetManager.loadClass (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2841448)
    at WidgetManager.loadModelClass (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2454419)
    at WidgetManager._make_model (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2452380)
    at WidgetManager.new_model (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/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://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2448870)
    at https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-renderers-1.3.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2840461
    at t._handleCommOpen (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-2025.7.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:3:119000)
    at async t._handleMessage (https://file+.vscode-resource.vscode-cdn.net/home/firestar/.vscode/extensions/ms-toolsai.jupyter-2025.7.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:3:120875)

restart kernel won't fix

首先，使用 ipympl widget 在 stack trace 中描述的 VS Code Jupyter 环境中重现该故障。检查 ipywidgets.js 和 ipywidgetsKernel.js 中的堆栈条目 WidgetManager.loadClass 和 handle_comm_open，然后比较已安装的 Jupyter、renderer 和 widget 版本。完成标准是确定触发原因，并确认间歇性 JavaScript 错误不再发生。