Fatal error: Uncaught TypeError: MessageBird\RequestValidator::validateSignature(): Argument #1 ($signature) must be of type string, null given, called in C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\messagebird\php-rest-api\src\MessageBird\RequestValidator.php on line 194 and defined in C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\messagebird\php-rest-api\src\MessageBird\RequestValidator.php:133 Stack trace: #0 C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\messagebird\php-rest-api\src\MessageBird\RequestValidator.php(194): MessageBird\RequestValidator->validateSignature() #1 C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\messagebird\php-rest-api\examples\signed-request-validation.php(10): MessageBird\RequestValidator->validateRequestFromGlobals() #2 {main} thrown in C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\messagebird\php-rest-api\src\MessageBird\RequestValidator.php on line 133