Error: the file "settings" could not be loaded

Christopher Tedd

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Oct 20, 2021, 7:24:28 AM10/20/21

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Hi,

A student receives the following error when they try to open Numbas:

They have apparently tried on laptop, tablet and phone and in both Edge and Chrome but receive this error every time. Any ideas for what I can suggest to resolve this issue?

Best wishes,

Christopher

Christian Lawson-Perfect

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Oct 20, 2021, 7:36:28 AM10/20/21

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Can you give me a link to the exam that has this error, on the editor?

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Christopher Tedd

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Oct 20, 2021, 7:46:49 AM10/20/21

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https://numbas.mathcentre.ac.uk/exam/16282/sma-week-2-assignment/

Christian Lawson-Perfect

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Oct 20, 2021, 7:51:06 AM10/20/21

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That's really, really weird! Can you ask them to open the developer console when this happens, and send me any error messages there?

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Christopher Tedd

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Oct 20, 2021, 7:53:56 AM10/20/21

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Will do, I'll let you know when they get back to me

Christopher Tedd

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Oct 20, 2021, 10:16:46 AM10/20/21

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Here's the student's console output

Christian Lawson-Perfect

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Oct 20, 2021, 10:30:10 AM10/20/21

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It looks like the root of the problem is that MathJax didn't load. If you haven't changed the mathjax url in your profile on the editor, then it'll load from https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.6/MathJax.js. Can you ask the student to check that they can load that address?

Cloudflare is the biggest content delivery network in the world, so I wouldn't expect it to be blocked on your student's internet connection, but they do some anti-denial-of-service stuff that can sometimes mean they block individual users. Maybe that's happened here?

I suggest we continue discussion privately - please email christia...@ncl.ac.uk if you have any more information that might help.

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