Jupyter notebook not trusted

Question

I am using Anaconda to work on a Jupyter notebook which displays \"Not Trusted\" (see on screenshot below).

What does it mean? Is it a problem? How can I solve

Answer 1

This can also happen when you create a notebook in a docker container with mounted volume (the file is owned by the root user) and then open in in jupyter running on the host machine. Changing file owner to the host user helps.