Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/.sites/133/site516/web/WP/wp-content/plugins/sitepress-multilingual-cms/inc/plugin-integration-nextgen.php:14
Stack trace:
#0 /home/.sites/133/site516/web/WP/wp-content/plugins/sitepress-multilingual-cms/inc/plugin-integration-nextgen.php(48): WPML_Plugin_Integration_Nexgen_Gallery->__construct()
#1 {main}
  thrown in /home/.sites/133/site516/web/WP/wp-content/plugins/sitepress-multilingual-cms/inc/plugin-integration-nextgen.php on line 14