If having the same issue, refer to jupyter/notebook #3397 pip3 install tornado==4.5.3 solve the issue.

manishrw changed the title Jupyter notebook note connecting to kernel Jupyter notebook not connecting to kernel on Sep 6, 2020 ...

What is a Jupyter Notebook? A Jupyter Notebook is an incredibly powerful tool for interactively developing and presenting Physics projects. A Notebook integrates code and its output into a single ...

What is a Jupyter Notebook? A Jupyter Notebook is an incredibly powerful tool for interactively developing and presenting Physics projects. A Notebook integrates code and its output into a single ...