Notice: Trying to get property 'priceId' of non-object in /var/www/html/commude/stripe-sample-code/create-subscription.php on line 18

Fatal error: Uncaught (Status 400) (Request req_lUK7OQZkj5hyb2) Missing required param: items. thrown in /var/www/html/commude/stripe-sample-code/vendor/stripe/stripe-php/lib/Exception/ApiErrorException.php on line 38