AJAX 500 Error when adding superfish menu to drupal panel (Solved)

■06/04 I got this error when adding superfish menu or quicktab to panel ——————————————————————————- An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information follows. Path: /?q=panels/ajax/editor/add-pane/panel_context%3Apage-test_page_panel%3Apage_test_page_panel_panel_context/two_33_66_second/block/superfish-1/form StatusText: error ResponseText: ——————————————————————————- Solution for this error is still not found…