I got this error when I restarted my VPS for testing.
[2024-12-07 20:07:01] production.NOTICE: A query exception was encountered while trying to load settings from the database: SQLSTATE[HY000] [2002] Connection refused (Connection: mysql, SQL: select * from `settings`)
[2024-12-07 20:07:02] production.ERROR: SQLSTATE[HY000] [2002] Connection refused (Connection: mysql, SQL: select * from `settings` where `key` = app:telemetry:uuid limit 1) {"exception":"[object] (Illuminate\\Database\\QueryException(code: 2002): SQLSTATE[HY000] [2002] Connection refused (Connection: mysql, SQL: select * from `settings` where `key` = app:telemetry:uuid limit 1) at /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Connection.php:760)
[stacktrace]
#0 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Connection.php(899): Illuminate\\Database\\Connection->runQueryCallback()
#1 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Connection.php(878): Illuminate\\Database\\Connection->tryAgainIfCausedByLostConnection()
#2 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Connection.php(722): Illuminate\\Database\\Connection->handleQueryException()
#3 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Connection.php(405): Illuminate\\Database\\Connection->run()
#4 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2718): Illuminate\\Database\\Connection->select()
#5 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2707): Illuminate\\Database\\Query\\Builder->runSelect()
#6 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(3247): Illuminate\\Database\\Query\\Builder->Illuminate\\Database\\Query\\{closure}()
#7 /var/www/pterodactyl/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2706): Illuminate\\Database\\Query\\Builder->onceWithColumns()