An error with optional lab

I have a problem with optional lab in Gradient descent. Unfortunately I cannot open it. I have gotten this error since yesterday: " Your lab session has timed out…If you’d like to continue working, reopen the lab." I reopened it a few times but no result. What should I do? because I am stocked with this lab and I cannot continue the course!

This lab was updated yesterday (Oct 13). I just tried it and it opened without problems.

Things to try:

  • Verify that you are enrolled in the course and have paid whatever fees are necessary (or have approved financial aid, if applicable).

  • Try logging-out of Coursera and then log in again.

  • Clear your cache and cookies.

@Mahshid_Khazaei_Shad , were you able to open it? I have also tried it and it is working just fine. Please contact us in case you still have any issue.

Hello @Mahshid_Khazaei_Shad,

I have seen 4 learners solved this issue by correcting their computer’s system time. Please check if this is the source of problem.

Cheers,
Raymond

Thank you for your replies. This is very weird because I cannot still open the lab with my PC however Now I have tried with my laptop and I can. Maybe there is a problem with my PC. Any way I am very thankful.

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