"[error] [exception] [c0e209e21f487eb158cbed56] /w/api.php?action=wbstackInit&format=json InvalidArgumentException: UserGroupManager::addUserToGroup() needs a positive user ID. Perhaps addUserToGroup() was called before the user was added to the database." Looks like the issue. Presumably due to something like an invalid username? ( see: https://github.com/wbstack/mediawiki/blob/main/dist-persist/wbstack/src/Internal/ApiWbStackInit.php#L50 for where we should have caught this error a little earlier and https://github.com/wbstack/api/blob/main/app/Http/Controllers/WikiController.php#L42 for where we should have caught this even earlier )

We're now awaiting contact from the Wiki owner to confirm which users (if any) that currently exist need to be promoted to Bureaucrat

@Valerie_Wollinger_WMDE @Tarrow what's the outcome of the followup with the user? can this ticket be closed?

@Evelien_WMDE @Tarrow user requested to set up two new admin accounts to test whether issue is rooted in their internal e-mail hosting

Documented steps in a GDoc: https://docs.google.com/document/d/1wd6IZGFKfbqQBmfQyL22jNiiNgLZFpIePLEwyqxtRLs/edit

since this is all involving more private than public information

I've gone and granted bureaucrat and sysop permission to Situx and Linsel users on archaeo3d.wikibase.cloud

Thanks @Tarrow
@Valerie_Wollinger_WMDE Can you validate this with the user and close the ticket if it's resolved?

yes.