I have deleted that line of code ! acmethemes/mega-menu/mega-menu.php ! got an Fatal Error on wordpress them i fixed it through the File Manager i put again the origianl code there and now everything is back to normal, i have downloaded that Plugin ! Menu Icons ! i have saved the changes on that plugin but nothing happened maybe that plugin is uncompatible with my version 4.7.3 wordpress ?
Thanks for the help.