As we are coming up to Ubunto 20.04 and my 18.04 was behaving erratically (it would freeze if left alone too long). I installed 18.04 server on a new SSD. I backed up and re-installed the timetrex postgres database and is shows as good in psql.
I also copied var/www/html/timetrex recursively and kept a secure copy of timetrex.ini.php seprarately.
trying to connect from a desktop ubuntu via firefox I get:
Screenshot from 2020-02-18 22-35-15.png (21.92 KiB) Viewed 3177 times
I think the solution is to reinstall from the .zip file then return the timetrex ini.php.
Just checking before I do this if this is what I should do.
Unfortunately your log is pretty much empty and doesn't contain any useful information about the error message.
The most common issue we see with this type of error is the security settings in PostgreSQL are not configured such that they allow connections on the interface (ie: localhost).
If you actually try to login to TimeTrex when logging is enabled, you should see the specific error message appear in the log, it would normally be quite obvious.