Warning: Undefined global variable $_SESSION in /var/www/html/mun/automated_jobs/reservation_expiration_warning.php on line 7

Warning: Trying to access array offset on value of type null in /var/www/html/mun/automated_jobs/reservation_expiration_warning.php on line 7

Fatal error: Uncaught mysqli_sql_exception: Incorrect integer value: '' for column 'sessionId' at row 1 in /var/www/html/mun/automated_jobs/reservation_expiration_warning.php:7 Stack trace: #0 /var/www/html/mun/automated_jobs/reservation_expiration_warning.php(7): mysqli_query() #1 {main} thrown in /var/www/html/mun/automated_jobs/reservation_expiration_warning.php on line 7