Fatal error: Uncaught Error: [] operator not supported for strings in /var/www/signup/modules/engine/api.mysql.php:84 Stack trace: #0 /var/www/signup/modules/engine/api.signup.php(99): simple_queryall() #1 /var/www/signup/modules/engine/api.signup.php(43): SignupService->loadConfig() #2 /var/www/signup/index.php(19): SignupService->__construct() #3 {main} thrown in /var/www/signup/modules/engine/api.mysql.php on line 84