I'm starting to learn Python and I'm currently following a MOOC using Jupyter, which seems to be a great tool. It's composed of several questions, each one requiring to write a piece of code.
I submit my code on a regulary basis so I know that this particular notebook works. But now I have an orange "Method not allowed" flag top right on my browser:
When I click on it it disappears for a while and then come back. All code chunks are executed without any error.
How could I get informations about how to solve this issue ?
EDIT : It wasn't about the code written in the notebook. See answer below.
Thanks :)
