Unable to upgrade from 7.10.14

Playing for the first times with SuiteCRM and after installing it though Softaculous i tried to update it with Upgrade Wizard. Then i got this error:

and in the log this shows:

Any idea what’s going on and what should i do?

It’s pretty clear from this log that your MySQL service is experiencing issues. I’d contact your host. It’s not an issue with the upgrade script from this log excerpt.