Help This is Very Frustration (Failed to open Descriptor file )

I’ve been Stuck with this for weeks now and i can’t fully ship my game my game is playable but when somebody downloads it from itch.io this always happen I tried zipping the binary files n all nothing is there anyone who can help me fix this please of is there a way the people who download my game can fix it by themselves please I’m very desperate at this point ( Ps this happens with all my projects )