Howard Miller

I assume you mean the user "private files" area. I've never done it, but there's a web service function 'core_files_upload'. You need to supply certain information such as the contextid and itemid for the file and it should be possible to find these for the private files area - see https://moodledev.io/docs/4.1/apis/subsystems/files.

You can get lots of information about the user with 'core_user_get_users' function.

Maybe this gives you a start? Often these sort of things require a 'cocktail' of web service calls to get all the info you need. However, sometimes one step is annoyingly missing.

Unfortunately, nor do I.

Have you done basic sanity checks? Can you see strings in other components and suchlike?

WFM....

I can only tell you that we have a huge number of Safari (especially on mobile) users and we're also on 4.1 at the moment. No issues like this at all.

Start by making *sure* that $CFG->wwwroot is correct for your docker setup.