So I made a small mod pack and included Biomes O' Plenty and encountered this error report.

[20May2020 12:08:16.541] [Render thread/ERROR] [net.minecraftforge.fml.javafmlmod.FMLModContainer/LOADING]: Caught exception during event RegistryEvent.Registerminecraft:item dispatch for modid biomesoplenty
java.lang.NoSuchMethodError: net.minecraft.item.MusicDiscItem.(ILjava/util/function/Supplier;Lnet/minecraft/item/Item$Properties;)V
at biomesoplenty.common.item.MusicDiscItemBOP.(MusicDiscItemBOP.java:32) ~[?:?]
at biomesoplenty.init.ModItems.registerItems(ModItems.java:31) ~[?:?]

Then proceeded to remove every mod except Biomes O' Plenty and got the same exact error. I have no idea what it's going on about a music disc. Heres both crash report with and without all the mods.
standalone.log
crash with mods.log

So far everytime I've launched it, which is more than a dozen times I've gotten that error.
Halp.
Version of Biomes O' Plenty: 10.0.0.362

I also tried to run this version of the mod on Forge 31.1.77 and it gave me this error but I installed Forge 31.2.0 and it worked

Update Forge

Hey @Forstride do you think it would be worth the time to just write a lazyoptional that is set up during init so BOP has greater support for versions of Forge or to just use the new Forge API like currently is the case? I ask because my PR is what is causing the influx of issues and I am thinking I could submit a broader fix that would work across more versions of 1.15.x and use the current change for 1.16 and above.