Stuck in maintenance mode after upgrade to NC 14

I am currently using NC on shared hosting, so it was installed using the web installer.
I have tried an upgrade from 13 to 14, and now I am stuch in maintenance mode.

How can I resolve this, or roll back to NC 13 ?

Panic over - I found the
‘maintenance’ => false
setting in the config.php file via FTP and got everything working again