Here are some common questions about the labs in this course. If you can’t find the solution here, kindly search for or create a new topic in this category.
3. Why are the labs locked? I don’t see a “Launch App” button.
5. How do I download the notebooks?
6. How do I submit the labs or mark them as completed?
7. I got logged out and saw an “AWS account deactivated” message. What does it mean?
9. I submitted the lab but got an error message. What should I do?
10. I’m getting an InvalidSignatureException with a “Signature expired” message. What should I do?
11. Why do I get this error: Module Not Found Error: No module named ‘torch._C’?
12. I’m running into ReadTimeout errors when I try to download the dataset. Please help.
1. Where are the labs?
You can see the labs in the classroom items right after the walkthrough videos by Chris Fregly. There should be one lab per week.
2. How do I access the labs?
At the bottom of the App Item containing the labs, you should tick the checkbox stating you agree to uphold the Coursera Honor Code. Then, click on the Launch App button. This will open a new tab in Vocareum that contains instructions to run the AWS lab.
If nothing happens after clicking Launch App, please check your browser’s pop-up blocker. Also check that your browser has enabled cookies and cross-site tracking. These are needed because the Vocareum lab environment is embedded into the Coursera site. You can read more about that here.
There is also a known bug when trying to run the labs on some tablets. We recommend running them on a desktop or laptop.
3. Why are the labs locked? I don’t see a “Launch App” button.
The labs are available to non-audit enrollees. It is also not covered by Coursera Plus. If you purchased the course and they are still locked, please contact Coursera through chat or email (instructions here) so they can check your account.
4. I clicked the Start Lab button but it’s taking a while for the AWS button to turn green. What should I do?
The labs should start within 30 minutes (usually less). If the countdown timer starts, the button usually turns green before it reaches 1:30. If it takes longer than that, please reply to this topic so we can investigate and escalate if needed.
5. How do I download the notebooks?
You can either right-click on the file in the File Explorer, or clickFile in the Menu Bar. Both should have a Download option:
- right-click the filename in the File Explorer:
Filemenu:
6. How do I submit the labs or mark them as completed?
You can click the Submit button in the upper right of the Vocareum instructions page. There is no Submit button in Sagemaker or the AWS console. Also take note that the button will only work after you have successfully started the lab (i.e. after the AWS light turns green and you click on it).
7. I got logged out and saw an “AWS account deactivated” message. What does it mean?
The lab provisions a studio app by default. In order to combat fraud and excessive charges, if you try to launch additional studio apps (or any resources outside the scope of the lab), the platform will deactivate your access. You can fill out this form , and our partners will work on re-enabling your access. It is best to avoid this case by being mindful of the bounds of the lab.
In most of the learner reports, this is related to the instance type selected for the kernel. Please check point 10 below to see how you can check if you’re using the correct one to avoid deactivation.
8. I see a “Budget exceeded”/“AWS account deactivated”/“Account is still in cleanup” message when I click “Start Lab”. How do I solve this?
Please fill out this form so our team can investigate your account. We will reach out to you when you can retry the lab. This is usually resolved within the day but please wait 48 hours (excluding weekends and US holidays) before following up.
9. I submitted the lab but got an error message. What should I do?
This sometimes happen and will resolve itself in a few minutes. Kindly wait for about 5 to 10 minutes and try pressing the Submit button again. If the error persists, please create a topic on this category
10. I’m getting an InvalidSignatureException with a “Signature expired” message. What should I do?
Please check your operating system’s clock and sync it to a time server if possible. Here’s one article for reference but feel free to find another resource based on your setup. Then, relaunch the lab from the classroom.
11. Why do I get this error: Module Not Found Error: No module named ‘torch._C’?
Please make sure to run the pip install cells before running the import cells. These are usually the first code cells in the notebook. It might print out some errors but it should be okay. You can go back to Chris Fregly’s walkthrough videos in the classroom to check the expected output.
12. I’m running into ReadTimeout errors when I try to download the dataset and LLM. Please help.
The Huggingface server might be down at the moment. Sometimes, it resolves after a few minutes and you can simply re-run the cell to download the files. If it persists for 30 minutes or more, kindly report in this category.