Fatal error: Uncaught Error: Call to undefined function add_action() in /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php:236 Stack trace: #0 /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(190): Jetpack_Memberships->register_init_hook() #1 /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(1046): Jetpack_Memberships::get_instance() #2 {main} thrown in /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php on line 236