[BlueOnyx:25371] Roundcube login

[Robert Fitzpatrick]

Roundcube giving me fits on a 5209R server where no login works always 
with the Roundcube error "Login failed". There was a space issue on the 
home drive at 95% full, but persists even after getting it less than 
70%. IMAP working fine, even if I set the Roundcube config default host 
to the host with issue on a different 5209R server and vsite where 
Roundcube works, I can login to any user account with no issue, so it 
seems this is a Roundcube issue. I've compared and set same PHP 7.4 FPM 
for the site, tried to completely uninstall Roundcube from a vsite and 
reinstall, the issue remains.

Can someone suggest my next step to get Roundcube accepting logins for 
any vsite?

-- 
Robert