Fatal error: Uncaught mysqli_sql_exception: Unknown column 'ios_appsflyer_dev_key' in 'field list' in D:\Server\ProjectMH\DBUtils\DBConnector.php:123 Stack trace: #0 D:\Server\ProjectMH\DBUtils\DBConnector.php(123): mysqli_query(Object(mysqli), 'SELECT ios_apps...') #1 D:\Server\ProjectMH\DBUtils\DBConnector.php(83): DBConnector->QuerySQL('SELECT ios_apps...') #2 D:\Server\ProjectMH\ServerDB\GetAppsflyerCode.php(6): DBConnector->GetRows('SELECT ios_apps...') #3 {main} thrown in D:\Server\ProjectMH\DBUtils\DBConnector.php on line 123