Error opening stream: HTTP 404: Not Found (Kernel does not exist:

[tapaswenipathak]

[W 21:54:47.968 NotebookApp] KernelRestarter: restart failed
[W 21:54:47.969 NotebookApp] Kernel fa549ddd-e643-46d1-bea0-fdb733415e03 died, removing from map.
[W 21:55:29.896 NotebookApp] Timeout waiting for kernel_info reply from fa549ddd-e643-46d1-bea0-fdb733415e03
[E 21:55:29.900 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: fa549ddd-e643-46d1-bea0-fdb733415e03)

[tapaswenipathak]

This could fix it for you: ipython/ipython#11270 (comment) or this jupyter/notebook#5814.

Also, please make sure, you install as per the sequence https://github.com/OpenMS/cling-notebooks/blob/main/README.md#to-run-in-local to load and run kernel.