Fatal error: Uncaught ErrorException: Cannot modify header information - headers already sent in /var/www/html/bootstrap.php:41 Stack trace: #0 [internal function]: {closure}(2, 'Cannot modify h...', '/var/www/html/b...', 41) #1 /var/www/html/bootstrap.php(41): header('Content-Type: a...') #2 [internal function]: {closure}(Object(ErrorException)) #3 {main} thrown in /var/www/html/bootstrap.php on line 41