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Roll call can timeout with a 504 gateway time-out error

Roll call can timeout with a 504 gateway time-out error

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This behavior has been resolved and deployed to the production environment as of 7/13/22.



Roll call can fail to load with a 504 Gateway Time-out in courses if it takes too long to load the data.


Expected Behavior


Roll call should load successfully in courses.




Refresh the page and hope it loads the next time.


Steps to Reproduce


Prerequisite: Have a course with a decent amount of enrollments, about 500, with each enrollment in multiple sections.

  1. Attempt to load the roll call tool. If it loads successfully, you may need to throttle your network. I was able to consistently have it timeout when using the "Slow 3G" setting within Chrome's network tab.


Additional Info


Known issues indicate notable behaviors that has been escalated to the Canvas engineering team. Known issues are not a guarantee for an immediate resolution. This document is for informational purposes only and does not replace the Support process. If you are encountering the behavior outlined in this document, please ensure you have submitted a Support case (per your institution's escalation process) so Canvas Support can adequately gauge the overall customer impact and prioritize appropriately.

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