Error validating SEB keys - Moodle + MacOS Sequoia

[ehoving]

Describe the bug
User cannot start SEB quiz from Moodle.

To Reproduce
Steps to reproduce the behavior:

1. Create Moodle Quiz with SEB enabled.
2. Add a True/False question
3. Install SEB
4. Launch Exam from Moodle
5. SEB redirects to Moodle log in.
6. Log in.

Expected behavior
Quiz start page should show, allow user to Attempt the quiz.

Screenshots
Instead user gets the following error

SEB logs - error.log

Version Information
OS 15.0
SEB 3.3.3 and SEB 3.4 - issue occurred on both versions.
Moodle 4.4.4

Additional Context
We keep getting mixed results from SEB.
It was working on Windows devices for most users.
Some user reporting similar error on Windows devices.
Here is a log file from a Windows user. Im not sure if its related or separate issue.

SEB logs - window user error.log

[danschlet]

Your screen shot shows the error "unsupported URL", the log as well:

-[SEBAbstractWebView sebWebViewDidFailLoadWithError:]: Load Error: Error Domain=NSURLErrorDomain Code=-1002 "unsupported URL" UserInfo={networkTaskMetricsPrivacyStance=Unknown, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <DC5A5B59-3B6C-4613-BF4A-DB644D1DC6D5>.<127>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <DC5A5B59-3B6C-4613-BF4A-DB644D1DC6D5>.<127>" ), NSLocalizedDescription=unsupported URL, _WKRecoveryAttempterErrorKey=<WKReloadFrameErrorRecoveryAttempter: 0x12de818f0>, networkTaskDescription=LocalDataTask <DC5A5B59-3B6C-4613-BF4A-DB644D1DC6D5>.<127>, NSErrorFailingURLStringKey=sebs://moodle.ucl.ac.uk/mod/quiz/accessrule/seb/config.php?cmid=7040658, NSUnderlyingError=0x12decb140 {Error Domain=kCFErrorDomainCFNetwork Code=-1002 "(null)"}, NSErrorFailingURLKey=sebs://moodle.ucl.ac.uk/mod/quiz/accessrule/seb/config.php?cmid=7040658}

Are you using URL filters in your SEB config? If yes, you need to make sure not to block the URL used by SEB for starting the exam with this sebs:// URL. Disable URL filters to test if it works without them.

Otherwise please provide me access to a test exam where this can be reproduced. I can't reproduce it with neither SEB 3.3.3 nor 3.4 on macOS Sequoia. I nevertheless don't have access to Moodle 4.4.4.

[ehoving]

Thanks @danschlet this has resolved the issue for the user now. I was not aware you had to whitelist the launcher.

However, we are still having issues for some users. See the second log file I provided above. I believe it shows a 403 forbidden response.
Do you know what might cause this?
Would SEB be impacted by Cloudflare?

Any advice on the matter would be appreciated.

[ehoving]

Hi @danschlet could you provide any advice on the above issue? We are keen to promote Safe Exam Browser but these kinds of errors are preventing us.

[danschlet]

@ehoving sorry, but I can't help you if you don't do what I wrote above:

Otherwise please provide me access to a test exam where this can be reproduced. I can't reproduce it with neither SEB 3.3.3 nor 3.4 on macOS Sequoia. I nevertheless don't have access to Moodle 4.4.4.

I have now updated our demo Moodle to 4.5 and everything works perfectly. I need access to your exam which doesn't work, sometimes it helps if I get the settings which don't work for you, but in this case it can very well be caused by some network specificity like Cloudfare (I don't have any experience with that though).

You know, nowadays millions of users use SEB with Moodle every month. So if we don't get a huge number of reports for a particular issue, then it most likely happens in your environment only. So we would need to find out what the difference in your environment to a generic Moodle - SEB environment is. That's only possible if either you try to circle in where exactly the issue could be located or if you give me more information and access to your environment.

[danschlet]

Btw. the error above in the log ("unsupported URL") and on the screen makes me suspect that Cloudfare blocks the sebs:// custom URL/URI scheme. I would ask your network guys or Cloudfare if that could be the case.