I had this same problem and checked the error log for apache
(httpd.service) and found the same repeating error every time this
message was thrown (in browser and in my client login)- in my instance
the issue was apache permissions. The fix was creating a new block that granted permissions to all users cascading
down from the earliest relevant folder.I can't say if this is the answer
you're looking for but the symptoms seem the same down to the /r/test
returning success but still getting the ex...