If you are a player, please notify the server administrators of this
error, and or provide a link to this article for further reference.
If you are a server administrator, please ensure that you have done an inspection to
check that you are not running any modifications to the game which may use player skulls
in such a way.
Alongside, you should contact the appropriate parties of your server modifications if you
are using any.
If your question was not answered here, or for further support please contact our technical support