Plugin attempted to register popupmessage

you could replace the trapped chest texture with the shulker box texture with a texture pack

 

Ye

 

That error happens when you're registering events before the plugin gets enabled, you're probably registering events in the onLoad() method. You should consider registering events during onEnable() instead.

I know your code doesn't show any events being registered, but that's the only case where that error is thrown.

 

Okay I will look thank you.