Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/doodle/wp-content/plugins/olympus-google-fonts/admin/class-ogf-upload-fonts-screen.php:44 Stack trace: #0 /var/www/doodle/wp-content/plugins/olympus-google-fonts/admin/class-ogf-upload-fonts-screen.php(34): OGF_Upload_Fonts_Screen->__construct() #1 /var/www/doodle/wp-content/plugins/olympus-google-fonts/admin/class-ogf-upload-fonts-screen.php(461): OGF_Upload_Fonts_Screen::get_instance() #2 {main} thrown in /var/www/doodle/wp-content/plugins/olympus-google-fonts/admin/class-ogf-upload-fonts-screen.php on line 44