I was on sethblings BlockvsZombies map looked what a villager sold and it crashed once i got to the end of the items

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I shouldn't have crashed while looking at the items the villager sold
What actually happened was...:
Describe what happened here
I was looking what a villager sold on sethblings BlockvsZombies map and got to the end of the items and I crashed
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...Open villagers shop
3. ...go to end of items