Fatal error: Uncaught Error: Call to undefined function add_action() in /nfs/bronfs/uwfs/hw00/d73/eph/wordpress/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php:221 Stack trace: #0 /nfs/bronfs/uwfs/hw00/d73/eph/wordpress/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(175): Jetpack_Memberships->register_init_hook() #1 /nfs/bronfs/uwfs/hw00/d73/eph/wordpress/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(945): Jetpack_Memberships::get_instance() #2 {main} thrown in /nfs/bronfs/uwfs/hw00/d73/eph/wordpress/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php on line 221