Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\extensions\blocks\paypal-payment-buttons\paypal-payment-buttons.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\extensions\blocks\paypal-payment-buttons\paypal-payment-buttons.php on line 13