Fatal error: Uncaught TypeError: explode(): Argument #2 ($string) must be of type string, array given in /var/www/html/event/5triveforimpact/referral.php:99 Stack trace: #0 /var/www/html/event/5triveforimpact/referral.php(99): explode() #1 {main} thrown in /var/www/html/event/5triveforimpact/referral.php on line 99