Activities render blank in Moodle 3.11

[lassnj]

all our geogebra activities render a blank page with a loading icon in our moodle 3.11. There are no error messages showing up in Moodle debug mode. and the developer console is also not showing any errors.
Might relate to #56 but the fflate link is there:

Thank you for the great plugin and your support.

[toniginard]

Hi @lassnj,

Please, check the parameter codebase, added in the latest release, has a correct value. In case of doubt, leave it blank, and ensure there is no character there, including a whitespace.

Best wishes,

Toni Ginard

[lassnj]

Hi Toni,
thanks for the quick reply. Unfortunately it still doesn't work. I checked the settings and they are the same:

any more advice?
Thanks a lot!
Regards
Julia

[PhMemmel]

Same hereon Moodle 3.11, also setting Codebase to a value which certainly works when rendering ggb directly from JS, still no success. No errors in browser console.