When Using A Downloaded map( Anywhere) That has a Resource Apck and Behaviour Pack, when obtaining an item from the 1.16 Nether Update, The game crashes

When I was playing a custom map, and it is skyblick with a fishing randomizer, I obtained a Block from the 1.16 update, The game Instantly Crashes. It makes sense to get items in skyblock, but please just fix the problem when you obtain it, Via The og way or modified way.