osTicket was set up and running OK for some time, however now I get 504 Gateway Time-out and Can't seem to get into anything.
The login screen comes up OK, I log in OK, then the first page with jobs is displayed and hangs (normally this is when it goes out to check the email) but when I click on any links it eventually returns with 504 Gateway Time-out
I have tried entering URL ./admin.php and ./profile.php but these also hang and eventually return the error
Suggestions?