Error: Grader timed out

[meiyou]

I finished coding of the assignment in the notebook. It ran and everything looked fine. It properly stopped training when accuracy reached 99.8%. But then I got the following error when submitting assignment.

• ################ Learner Error: Grader timed out
  Please try optimizing the efficiency of your solution and submit again. You can also visit the discussion forum to see if your peers have experienced and found resolutions for similar errors, or if course staff have provided prior guidance for these errors… If the error isn’t resolved in 24 hours, please reach out to Coursera through our Help Center.
  ###################################################

[Sakshi_Bhatia]

Have you found any way around it? I have been facing this problem too. Tried multiple methods, but nothing seems to be working yet

[meiyou]

reported this issue to coursera help centre. The representative asked me to do the following troubleshooting:

• Make sure your ad-blocker is disabled from the browser.
• Make sure you saved your files in the correct format. To change the format, re-save your files.
• Check your Internet connection or network restrictions. If learner’s connection is too slow the upload may time out. If learner is using a work network, uploads may be restricted.
• Reset your programming environment (especially for Jupyter notebooks - Reset Kernel) often will get rid of the bad code.
• Decrease the size of the files, if possible.
• Make sure the browser is working correctly by clearing your browser’s cookies and cache.

I’ve tried all but the grader issue still exists. The representative told me he/she has reported it to their technical team.

[meiyou]

UPDATE: my latest assignment submission somehow passed. (it failed about an hour ago, and I didn’t do anything during the hour.) I just check again, and it passes

[HiZahra]

Same problem here. My code is all correct, but the grader can’t grade it. It’s a shame. Many prople reported the same problem on Coursera Forum.

[meiyou]

some people say it passed when they submitted again. might worth trying it a few more time.

[JeffvdZ]

I have tried resubmitting multiple times, even in off hours, but still cannot get the graded to complete.

[JeffvdZ]

I just ran it one more time and it finally passed.

[Sakshi_Bhatia]

I’ve tried all the above things too. Nothing seems to be working, and its been more than 2 days trying all over again. Should I contact staff too? How do I do so?

[Thomas_Chapuis]

Try optimizing your model, setting it to the bare minimum in number of convolution kernels and also number of fully connected neurons.

[LoiLN]

change the number of filters to 32, and metric to ‘acc’, it works for me!

[alok.bhaskar]

Slice the training images and labels

YOUR CODE STARTS HERE

training_images=training_images[0:10000, :, :]
training_labels=training_labels[0:10000]
training_images=training_images.reshape(10000, 28, 28, 1)

[nickmuchi]

I have tried different strategies for the past few days and still the same error, this is a total waste of time!

[chris.favila]

Hi everyone! Sorry to hear about your problems with the lab. Coursera engineers found an issue with the lab manager and are now fixing it. Hopefully, this will also fix the problem of the slow grading for this week. I’ll let you know asap once I get an update. In the meantime, feel free to first go through the next part of the course. Thank you!

[husseinmleng]

I have the same problem after trying all solutions presented in the forums

[chris.favila]

Hi Hussein! Unfortunately, it seems the bug that leads to this timeout hasn’t been found yet. Some learners found success by simply retrying at different times. I’ll follow up with our team to see where we are at. Sorry for the inconvenience! Please also check your inbox. Thanks!

[Javokhir_Khusanov]

Hi @chris.favila

I have the same problem.

It is almost a month but still this problem.
I can’t even submit it.

[chris.favila]

Hi Javokhir. I’m sorry to hear that. Please check your inbox. Thank you!

[AmitKumar]

I am facing the same problem with my submission.

[Mahnoor_Rana]

firstly i faced graded error many times then i faced this error Only Excercise 3
whats wrong with it??