Player Disconnecting Crashes Server

After the apirl update, about once a day when a random player disconnect it causes the server to crash.

Iv tried every thing from updating and disabling addons, starting over completely with fresh install of everything.

Here is the popup crash notification.

ERROR! SendData reliabe data too big (xxxxxx)[GM:CallWithArgs - !ThreadInMainThread] player_disconnect

Iv tried googling and posting on the steam forums but haven’t gotten very far.
I would really love some advice on what to do.