when use jupyterhub server, click run get this:
workbench.desktop.main.js:21968 [Extension Host] error 19:12:40.074: Jupyter Extension: Exception while handling messages: TypeError: First argument to DataView constructor must be an ArrayBuffer
Uncaught (in promise) TypeError: Kernel message validation error: First argument to DataView constructor must be an ArrayBuffer
at new DataView ()
at uc (ipywidgetsKernel.js:3:64346)
at Object.ac [as deserialize] (ipywidgetsKernel.js:3:64174)
at i._onWSMessage [as onmessage] (ipywidgetsKernel.js:3:71244)
at n.handleMessage (ipywidgetsKernel.js:11:11221)
at ipywidgetsKernel.js:3:147486
at Array.forEach ()
at yn.handleMessage (ipywidgetsKernel.js:3:147469)
at Lr.handleKernelMessage (ipywidgetsKernel.js:3:146573)
at Object.fire (notebookWebviewPreloads.js:3:11180)