Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class "Tribe__App_Shop" not found in /webspaces/18/u006853/html/wp-includes/class-wp-hook.php:324 Stack trace: #0 /webspaces/18/u006853/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #1 /webspaces/18/u006853/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /webspaces/18/u006853/html/wp-settings.php(506): do_action('plugins_loaded') #3 /webspaces/18/u006853/html/wp-config.php(133): require_once('/webspaces/18/u...') #4 /webspaces/18/u006853/html/wp-load.php(50): require_once('/webspaces/18/u...') #5 /webspaces/18/u006853/html/wp-blog-header.php(13): require_once('/webspaces/18/u...') #6 /webspaces/18/u006853/html/index.php(17): require('/webspaces/18/u...') #7 {main} thrown in /webspaces/18/u006853/html/wp-includes/class-wp-hook.php on line 324