Remynfv

I decided to fix this, but I'm not sure it _should_ be fixed? There are actually two exceptions, both of which get logged. Fixing one with a null check is...

Hmm, it makes sense that you'd want to prevent people from modifying command blocks. There should definitely be a way to allow non-opped players to use all the GameMasterBlocks though....

> The tricky thing is we would need to send to the client to update their op status as they aren't even able to place these down unless they have...

> That already exists. `Player#sendOpLevel` Oh, haha. I had no idea. So, what needs to be figured out before this PR can be merged? Server owners can send players their...

The key problem here is that there's **no way** to place command blocks and other gamemaster blocks without being **fully opped**. Right now my jank workaround is to listen for...