Texture Pack Not Working Properly

Hello, so I have recently started on this server. Everything looks cool and the resource pack seemed to work properly in the beggining, but now I've got an item called "Defibrilator" it is a dagger for my assassin, but has no texture. Just a block of stairs. I was wondering if that is natural or is it only for me? Because I've tried to disable the texture packs for the server, reinstall them manually, change my game version but nothing helped. Any other ideas?

 

I don't think Defibrillator is one of the items frequently affected by this glitch, although I'm not certain.

 

Delete the server-resource-packs folder and rejoin wynncraft with server resourcepacks enabled. This will download a new copy of the resource pack, hopefully fixing any problems.