What if you start Jupyter up without specifying a particular .ipynb file? Does that work
Please always paste in errors that are supplied in text form on your machine as errors in text form here, too.
Please read Getting good answers to your questions. Pay particular attention to the admonition ’ DO NOT post images of code, data, error messages, etc’, under the section ‘Help others reproduce the problem’, in the link to How do I ask a good question? at the bottom there.
For pasting it in so it is readable, you’ll want to learn about ‘block code formatting’ here. (Or see about ‘fenced code blocks’ here. They are both the same thing if you look into the details. They just have slightly different terms used in the two locations.)