Forms Ajax Not Working Verified: Gravity

add_filter( 'gform_ajax_form_class', function( $class ) return strpos( $class, 'gform_ajax' ) === false ? $class . ' gform_ajax' : $class; );

Additionally, ensure your caching plugin is not "Minifying" or "Combining" JavaScript files aggressively. Try disabling JS minification temporarily to see if the form works. gravity forms ajax not working