Latest bug with FP update

InvalidCastException: Specified cast is not valid.
at Oxide.Plugins.AdminHammer.CheckEntity (BasePlayer player) [0x00767] in <88a7458b567c4ed4a031d49ed85fdb23>:0
at Oxide.Plugins.AdminHammer+AH.FixedUpdate () [0x0007c] in <88a7458b567c4ed4a031d49ed85fdb23>:0

Happening alot

Is this happening on specific entities? What entities have you noticed it in?

I cant say ive noticed, I was just going through the server logs and found lots of this error

FYI happening daily..

InvalidCastException: Specified cast is not valid.
at Oxide.Plugins.AdminHammer.CheckEntity (BasePlayer player) [0x00767] in <72d0e95c95ff4ffb8e06e8b1d0af7c02>:0
at Oxide.Plugins.AdminHammer+AH.FixedUpdate () [0x0007c] in <72d0e95c95ff4ffb8e06e8b1d0af7c02>:0

Merged post

Players Base large storage chests - upon further testing and investigations I have found the plugin does respond with the contents of the storage chest and the owner and their steamid/playername details, however still getting the  following error in log/ console

InvalidCastException: Specified cast is not valid.
at Oxide.Plugins.AdminHammer.CheckEntity (BasePlayer player) [0x00767] in <72d0e95c95ff4ffb8e06e8b1d0af7c02>:0
at Oxide.Plugins.AdminHammer+AH.FixedUpdate () [0x0007c] in <72d0e95c95ff4ffb8e06e8b1d0af7c02>:0

I then placed a new Large Storage Chests and the plugin responds as it should with no error until the player placed a keylock on the chest then the error returned.. also noticed the error when storage adapter were placed on the chest. 
Plugin usually shows a small sphere around the chest, that does not show up either, however when a codelock was added the plugin worked as it should.

It would seem keylocks are the problem, without them the plugin works as it should

I hope this gives you some insight into what the problem might be