Coursera course : not able to save the lab assignments(Retrieval Augmented Generation (RAG)

Facing the issue while working on the lab assigment first in Module 1 and now in Module 2.

Platform: Coursera

Course name: Retrieval Augmented Generation (RAG)
Error says: Invalid response: 403 Forbidden

Browser: Safari (18.6 (20621.3.11.11.3))


Not able to move forward due to this error, not able to submit the worl. Please help here.

While there can be multiple reasons, I remember that I faced similar issue because I had opened the same notebook on a desktop and on a laptop, and while the session on the desktop was still active, I tried to update the session through the laptop. There was previously also issue of Kernel dying for some reason, so please try to restart the kernel, by going to Kernel option in the top menu.

I tried all the options around restarting, restarting the coursera, restarting the kernel and restarting the laptop itself, still getting the same error.