My plugin suddenly not likes to work partially

Heres the thing. I changed all the .getName() to .getUniqueId(). I have this really big loop for player interact events , it basically checks for signs and player gets to choose a gun. He can choose from SMG/Shotgun/Sniper/Bazooka . The same stuff are going on for all of these guns. My plugin after the UUID change , doesn't like players who pick shotguns. (With debug msgs everything gets excecuted but missing items , missing item meta's , not dyed armor , sometimes server freeze and a nullpointer exception in a random event occurs for no reason!)

Ideas? The only change made was .getName() to .getUniqueId()!

 

Well when getting a UUID it's probebly for storing data... but since the Sender is a player you can still do .getName() it wont do any harm*

 

It was fixed anyway