The crash says:
Exception caught when registering wandering trader
java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.Entity.m_9236_()" because "entity" is null
at com.telepathicgrunt.repurposedstructures.misc.maptrades.StructureSpecificMaps$TreasureMapForEmeralds.m_213663_(StructureSpecificMaps.java:53) ~[repurposed_structures-7.1.15+1.20.1-forge.jar%23708!/:?]
at jeresources.collection.TradeList.addMerchantRecipe(TradeList.java:58) ~[JustEnoughResources-1.20.1-1.4.0.247.jar%23630!/:1.4.0.247]
JustEnoughResources is mentioned, too
Does it work without one of these mods?