During server start I keep getting a few warning related to Yung's-Extra Mod.. Warn snippet below, full log file attached.

[23Jun2022 15:30:53.921] [main/WARN] [mixin/]: Reference map 'yungsextras.refmap.json' for yungsextras.mixins.json could not be read. If this is a development environment you can ignore this message [23Jun2022 15:30:53.921] [main/WARN] [mixin/]: Reference map 'yungsextras.refmap.json' for yungsextras_forge.mixins.json could not be read. If this is a development environment you can ignore this message [23Jun2022 15:30:54.083] [main/INFO] [net.minecraftforge.coremod.CoreMod.apotheosis/COREMODLOG]: Replaced 2 calls to Enchantment#getMaxLevel() in net/minecraft/world/inventory/AnvilMenu [23Jun2022 15:30:56.012] [main/INFO] [net.minecraftforge.coremod.CoreMod.apotheosis/COREMODLOG]: Replaced 2 calls to Enchantment#getMaxLevel() in net/minecraft/world/inventory/AnvilMenu [23Jun2022 15:30:57.108] [main/INFO] [net.minecraftforge.coremod.CoreMod.apotheosis/COREMODLOG]: Patching FishingHook#catchingFish [23Jun2022 15:30:57.337] [main/WARN] [mixin/]: @ModifyConstant conflict. Skipping yungsapi.mixins.json:IncreaseStructureWeightLimitMixin->@ModifyConstant::yungsapi_increaseWeightLimit(I)I with priority 1000, already redirected by repurposed_structures.mixins.json:structures.StructurePoolMixin->@ModifyConstant::repurposedstructures_increaseWeightLimitDev(I)I with priority 1000

latest.log

These are all normal warnings. It occurs because I have the mod set up for mixins in case I need to add them, but at the moment there are no mixins, so there is no yungsextras.refmap.json to read. Nothing to be worried about 👍