Cannot log into UCP

Hi, i have finally upgraded a system to freepbx 12. UCP looks great - except that I cannot seem to access it. Note: this is NOT distro - i’ve been afraid to start from scratch, as i had freepbx before distro existed.

Anyway: UCP login comes up; i can enter bad credentials, and it flags that. Great. However, good credentials simply give me “Processing…”, and nothing further. Not the wonderful UCP screens, just hangs there.

User Management is installed (though it looks nothing like the wiki page???) UCP access permitted.

Where to look? I saw one web reference to a ucp log file, and that does not exist for me.

help… thank you