Ubicast with Moodle Workplace app error : ERR_BLOCKED_BY_CLIENT

[jeremycarre38]

Hello,

When using the Moodle Workplace Android or iOS app, the activity returns the error "ERR_BLOCKED_BY_CLIENT". However, it works on the phone with a regular browser...

Do you have any idea what could be causing this? Should I open a ticket on the Moodle app tracker?

Thanks in advance

[sdiemer]

Hello,

This error means that the request was blocked by the user's browser.

It seems that this can be related to some ad blockers: https://stackoverflow.com/questions/23341765/getting-neterr-blocked-by-client-error-on-some-ajax-calls

What is the exact URL that is being blocked ?

Regards

[jeremycarre38]

Thank you for your quick response.

I'm using the Moodle Workplace mobile app, so I don't have an ad blocker. However, I just noticed that the blocked URL in my example is as follows: lib/editor/atto/plugins/ubicast/view.php?course=309&video=v1266672eeb7er3iksyu

I may not have posted my message in the correct repository, but I'm also unable to play other activities. I don't have any issues with other iframe videos like those from YouTube.

Perhaps the problem is related to the mobile app ?

[sdiemer]

Hello,

For what I have tested previously, the mobile app is redirecting to a real browser to open LTI content because the mobile app doesn't support embedding of such elements. My previous tests were made about 2 years ago and the mobile app may have evolved since then. I will do some new tests to check if I get the same behaviour and I will let you know if I find something to fix this issue.

Regards

[sdiemer]

I have tested right now and I didn't see any problem. I tested a video integrated with an activity of mod_ubicast (which opens the link with the browser) and a video in a text area integrated with atto_ubicast (which doesn't open the browser). Both integrations did work in my test.

My environment :

• Android 10 (moto g8 plus)
• Firefox 119 (with ad blocker uBlock origin)
• Moodle app up to date (June 9, 2023)
• Moodle 4.2.2 with all plugins up to date

I also tested with Chrome on an iPhone 12 without the Moodle application, and I didn't see any problem. I cannot install the application on this iPhone because it is handled by a remote testing service (browserstack).

Could you let me know what your environment is ?

Regards

[jeremycarre38]

Hello,

First of all, thank you for the time devoted to this issue.

Our environment is as follows:

• Moodle Workplace 4.1.6 (20231009) with all plugins up to date
• Moodle Workplace app up to date (October 5, 2023)

When we use the browser on our phone, it works. We only encounter the blockage with the Moodle Workplace app.

Do you have the ability to test with a Moodle Workplace environment ?

Regards

[Edunao]

Hello,

Do you need additional information? Do you have any leads?

Thank you in advance.

[sdiemer]

Hello,

I didn't had the time to do further tests and I think that I will not be able to test in the same conditions. I will let you know when I will have the time to do more on this issue.

Regards