Hey, I had the same issue.
Install Jupyter lab and it works I don’t know why there’s an error with Jupyter notebook though.
To install Jupyter lab run the code pip install jupyter lab
in your CMD(command prompt)
It is hard to tell if this is the same issue with the little information provided.
It just looks like something is loading still and there is an issue making the proper border? Is that not the case? Were you trying to use input()? Are you trying to say that JupyterLab works but Jupyter Notebook doesn’t? What about the other content here isn’t helping you with your case?