Thanks everyone I fix it with this link https://extensions.sketchup.com/extension/412723d4-1f7a-4a5f-b866-281a3e223337/sketch-up-stl?login=true To see my sketchup work moving animatronic https://www.youtube.com/shorts/eqU_uuUgtCE

Hello , I've been using Sketchup 2017 for years ... Well my hard drive failed .New hard drive and installing my software mainly Sketchup 2017 , noticing Export as STL is missing. Its looking different and worried. please help