Can't access PhpMyAdmin

If you receive an "An unkown error occured" or "invalid_argument" error while attempting to access phpMyAdmin, please check:

1. That the control panel server can reach the database server on port 3306.

2. Check that ufw is enabled on your control panel server. This is required for container connectivity.

3. If your control panel server uses outbound NAT to reach the internet, check the IP that you have configured as the control panel server IP matches the public address of the server.

4. On your MySQL server, check that the bind-address is still set to 0.0.0.0. If it has been overridden, revert the change