Fatal error: Uncaught Error: Call to undefined function add_action() in /nfs/bronfs/uwfs/hw00/d88/ecc/wordpress/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-classic-theme-helper/src/content-options/post-details.php:68 Stack trace: #0 {main} thrown in /nfs/bronfs/uwfs/hw00/d88/ecc/wordpress/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-classic-theme-helper/src/content-options/post-details.php on line 68