When i use a loophole in The Traveling Trader, The AI Crashes

So i was playing the traveling trader and found a loophole but when i used it

the AI & Command blocks used just broke out of nowhere. The loophole i

used was in The Savannah Village where i cut the tree first instead of trading

and Willager said something he should have said before i did it 2 times.

play the map and you will see mojang!