Fatal error: Uncaught exception 'Stripe\Error\InvalidRequest' with message 'Could not determine which URL to request: Stripe\Customer instance has invalid ID: ' in /home/sim/public_html/wp-content/plugins/stripe-php-2.1.1/lib/ApiResource.php:75 Stack trace: #0 /home/sim/public_html/wp-content/plugins/stripe-php-2.1.1/lib/ApiResource.php(20): Stripe\ApiResource->instanceUrl() #1 /home/sim/public_html/wp-content/plugins/stripe-php-2.1.1/lib/ApiResource.php(118): Stripe\ApiResource->refresh() #2 /home/sim/public_html/wp-content/plugins/stripe-php-2.1.1/lib/Customer.php(15): Stripe\ApiResource::_retrieve(NULL, NULL) #3 /home/sim/public_html/wp-content/themes/fluidapp/template-checkout.php(15): Stripe\Customer::retrieve(NULL) #4 /home/sim/public_html/wp-includes/template-loader.php(74): include('/home/sim/publi...') #5 /home/sim/public_html/wp-blog-header.php(19): require_once('/home/sim/publi...') #6 /home/sim/public_html/index.php(17): require('/home/sim/publi...') #7 {main} thrown in /home/sim/public_html/wp-content/plugins/stripe-php-2.1.1/lib/ApiResource.php on line 75