Programming assignment doesn't open

Hello,
When I try to open programming assignment of week 1, it loads continuously, but doesn’t open. In the center there is a circle, showing that Jupyter is getting loaded, but it never gets loaded.
Can you help to fix this problem?

Hello,

We are sorry to read that you are facing problems with the assignment. Please do try to close the browser and open it again. Besides you could try a different browser to open the jupyter notebook. If the problem persists, try to log out of your coursera account and log in again. Share with us all the information about your OS and browsers that you are trying so that we can help you further if the problem continues to happen…

Best,

Rosa