MY jupyter notebook doesn't give any output

Question

I've installed jupyter notebook and tried to run it. However, it keeps giving me no output. Also, when I type in the code, the color of the code doesn't changes. I think it's not reading it as a python code. the color of 1 is black and it returns no results I've deleted anaconda and tried it again and also restarted kernel but the same error occurs. And I also wonder why me kernel's name is 'Python 3 (ipykernel)' not 'Python 3'

<edit> I figured out it returned

Bad file descriptor (bundled\zeromq\src\epoll.cpp:100)

so I've tried

pip uninstall pyzmq -y
pip install pyzmq==19.0.2

following this document. But now, it became worse after having this error.

And now jupyter notebook doesn't even open.