Mastodon do not work after update to 2.7.0 (FIXED)

Hello Everyone,

I was able to update my instance to the latest version, 2.7.0 with no errors during the process or after, when I restart mastodon services, but now all I get in the browser is the elephant hitting the computer and the message that says “… something goes wrong on our end…”.

Please let me know where to start in order to find the issue and to fix it.