Warning: Undefined array key "HTTP_STRIPE_SIGNATURE" in /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/themes/wpresidence/stripecharge.php on line 8

Fatal error: Uncaught Stripe\Exception\SignatureVerificationException: Unable to extract timestamp and signatures from header in /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/plugins/wpresidence-core/resources/stripe-php-master/lib/Exception/SignatureVerificationException.php:28
Stack trace:
#0 /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/plugins/wpresidence-core/resources/stripe-php-master/lib/WebhookSignature.php(34): Stripe\Exception\SignatureVerificationException::factory('Unable to extra...', '', NULL)
#1 /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/plugins/wpresidence-core/resources/stripe-php-master/lib/Webhook.php(29): Stripe\WebhookSignature::verifyHeader('', NULL, '', 300)
#2 /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/themes/wpresidence/stripecharge.php(13): Stripe\Webhook::constructEvent('', NULL, '')
#3 /customers/c/6/9/alfagolf78.com/httpd.www/wp-includes/template-loader.php(106): include('/customers/c/6/...')
#4 /customers/c/6/9/alfagolf78.com/httpd.www/wp-blog-header.php(19): require_once('/customers/c/6/...')
#5 /customers/c/6/9/alfagolf78.com/httpd.www/index.php(17): require('/customers/c/6/...')
#6 {main}
  thrown in /customers/c/6/9/alfagolf78.com/httpd.www/wp-content/plugins/wpresidence-core/resources/stripe-php-master/lib/Exception/SignatureVerificationException.php on line 28