Some mode elements cause compilation errors (Armor)

I keep getting an Error For an armor that im creating, and I cant seem to find the problem.

Message/Error:

Your workspace contains mod elements that don't compile properly.

This was most likely caused by the last mod element you added or edited. Try altering the settings of mod elements that cause build errors (such elements are listed below) to try to fix this problem.

If you can't resolve this problem, export the workplace to a shareable ZIP file from the File menu and send it to us via our Issue tracker on our website so we can try to help you.

List of mode elements that cause compilation errors (trimmed to up to 10 elements):

• Ruby_Armor

Idk Where the "Issue tracker" is, Also Ruby Armor is My Armor's name/File.