Players kicked when moving spacesuit into inventoryNot An Issue
I have no idea what's causing this. 
The only other reports I've heard of this are due to MagicLoot. I don't use MagicLoot.

When any player moves a Spacesuit in their inventory they are Disconnected with the message "Disconnected: RPC Error in MoveItem"
And this message is printed in the server console:
AssertionException: Assertion failure. Value was False
Expected: True
split_Amount <= 0​
Never saw the bug myself, but some people have said it is related to plugins that change item skins.
its not actually a skin hence why u getting the error.
Someone has posted a fix on here somewhere  - you need to block the id.
tomhud
its not actually a skin hence why u getting the error.
Someone has posted a fix on here somewhere  - you need to block the id.

Block the ID in what?

I'm not using MagicLoot
Additionally, players are not kicked with the "AssertionException" message. 

They are kicked with a "RPC Error in MoveItem" message 
5f6403f6a7c6b.png?uid=5f640402e7368 george1908
I'm not using MagicLoot
Additionally, players are not kicked with the "AssertionException" message. 

They are kicked with a "RPC Error in MoveItem" message 

It would happen with any pluging using that skin. You'd likely need to block or reskin.

Locked automatically