ErrorData Object
(
    [class] => E_WARNING
    [message] => mysqli::__construct(): (HY000/2002): Connection refused
    [code] => 2
    [backtrace] => Array
        (
            [0] => 0: server/apache/rewrite.php Line 10
            [1] => 1: backend/application.php Line 89
            [2] => 2: backend/application.php Line 158
            [3] => 3: backend/services/database.php Line 32
            [4] => 4: backend/services/database.php Line 49
        )

    [file] => /var/www/qr/backend/services/database.php
    [line] => 49
)