Forge 1.19 41.0.106
clickadv-1.19-2.5
majrusz-library-1.19-2.11.0
majruszs-difficulty-1.19-1.5.5

Created a new world and crashed upon loading with this message:

The game crashed whilst exception in server tick loop
Error: java.lang.NoSuchMethodError: 'net.minecraft.world.entity.player.Player net.minecraftforge.event.entity.player.AdvancementEvent.getPlayer()'
Exit Code: -1

crashlog

If clickadv is added after world is created then everything runs as normal.

Thanks for the report, I see that it was already fixed here someaddons/ClickableAdvancements#11