Can't list item for sale? It's in my inventory...

Soo.. I just got a Nemesis Dagger... I'm trying to list it up in my shop but apparently it's non existent, as it doesn't show up in my inventory... It got hella nice stats and I would love to sell it, but I can't figure out why it's not letting me list it!

First of all, it's NOT LOCKED! So I can't figure out what the issue is 😞 please help!

I never had this happen to me before, so it's a complete mystery!

Nevermind, I figured it out, geez!