Fatal error: Uncaught Error: Call to undefined function Automattic\Jetpack\Extensions\Premium_Content\add_action() in /nfs/aesop1/hw00/d18/uwefm/wordpress/wp-content/plugins/jetpack/extensions/blocks/premium-content/_inc/subscription-service/include.php:34 Stack trace: #0 /nfs/aesop1/hw00/d18/uwefm/wordpress/wp-content/plugins/jetpack/extensions/blocks/premium-content/login-button/login-button.php(16): require_once() #1 {main} thrown in /nfs/aesop1/hw00/d18/uwefm/wordpress/wp-content/plugins/jetpack/extensions/blocks/premium-content/_inc/subscription-service/include.php on line 34