500 Whoops, something went wrong on our servers. (Laravel) [closed]

my laravel log shows this please help me fix this i tried everything online but nothing works

[2021-09-15 20:55:29] production.ERROR: SQLSTATE[HY000] [2002] Connection refused (SQL: select * from `settings` limit 1) {"exception":"[object] (Illuminate\\Database\\QueryException(code: 2002): SQLSTATE[HY000] [2002] Connection refused (SQL: select * from `settings` limit 1) at /home/vol2_3/byethost32.com/b32_29729239/htdocs/cronlab/vendor/laravel/framework/src/Illuminate/Database/Connection.php:664, PDOException(code: 2002): SQLSTATE[HY000] [2002] Connection refused at /home/vol2_3/byethost32.com/b32_29729239/htdocs/cronlab/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70)
[stacktrace]

my .env file has my details related to my database correctly but still problem remains domain link is:http://verux.byethost32.com/

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