Please see above.
i updated miniconda, pip, the modules and d2l to the most recent versions, but still no change.
In the log i find:
[IPKernelApp] ERROR | No such comm target registered: jupyter.widget.control
[IPKernelApp] WARNING | No such comm: 8ed5a5be-caea-4ba4-9d8a-acf6a9639c3e
Any ideas?