Summoning LeashKnot entity crashes Minecraft

This is a duplicate of MC-45869. In the future, please make sure to use the search feature of our bug tracker before reporting issues in order to make sure that your issue has not already been reported.

Additionally, "Minecraft eating entity" is not sufficiently descriptive (or descriptive at all) of the issue that you are reporting. When filing bugs, please ensure that your summary describes the reported issue correctly. I have updated the summary of this bug to be more accurate for you.