After updating from 4.0.8 to 4.0.13 server started daily crashing with same error.
Using this pack https://www.curseforge.com/minecraft/modpacks/life-in-the-village-3/files/5054001 1.19.2

java.lang.UnsupportedOperationException: null at java.util.ImmutableCollections.uoe(ImmutableCollections.java:142) ~[?:?] {} at java.util.ImmutableCollections$AbstractImmutableCollection.add(ImmutableCollections.java:147) ~[?:?] {} at com.oitsjustjose.vtweaks.common.tweaks.entity.TraderStonks.process(TraderStonks.java:98) ~[VTweaks-1.19.2-4.0.13.jar%23636!/:4.0.13] {re:classloading} at com.oitsjustjose.vtweaks.common.tweaks.entity.__TraderStonks_process_LivingDropsEvent.invoke(.dynamic) ~[VTweaks-1.19.2-4.0.13.jar%23636!/:4.0.13] {re:classloading,pl:eventbus:B}
crash-2024-02-01_23.49.24-server.txt

Additional crash log related to traderstonks crashes, in case it is helpful :)

crash-2024-03-25_21.40.18-server.txt

Only changing wanderingTraderRecoveryEnabled and enableFlavorText to false fixed the issue

Yeah this may take me a bit to fix - been quite busy as of late, just know that this is on my radar to fix soon. I should have set the "Villager Stonks" feature as disabled by default, it's less ready than I thought it was 😢

Thank you dude
From my investigating it might be because of conflict with Corail Tombstone, server was crashing when player died and after that his grave did not appear