Warning: Undefined array key "url" in /owin/api/www/gs/coupon.php on line 8

Warning: Undefined array key "headers" in /owin/api/www/gs/coupon.php on line 9

Fatal error: Uncaught TypeError: base64_decode(): Argument #1 ($string) must be of type string, null given in /owin/api/www/gs/coupon.php:9 Stack trace: #0 /owin/api/www/gs/coupon.php(9): base64_decode(NULL) #1 {main} thrown in /owin/api/www/gs/coupon.php on line 9