[19:15:53] [Render thread/ERROR]: Caught an error from mod plugin: class de.melanx.vanillahammers.util.JeiCompat morevanillalib:plugin/main
java.lang.NoSuchFieldError: diamondDoubleDropChance
at de.melanx.vanillahammers.util.JeiCompat.registerRecipes(JeiCompat.java:25) ~[?:2.2.0]
at mezz.jei.load.PluginLoader.lambda$new$5(PluginLoader.java:117) ~[?:7.7.1.137]
at mezz.jei.load.PluginLoader$$Lambda$36344/246592291.accept(Unknown Source) ~[?:?]
at mezz.jei.load.PluginCaller.callOnPlugins(PluginCaller.java:26) [?:7.7.1.137]
at mezz.jei.load.PluginLoader.(PluginLoader.java:117) [?:7.7.1.137]
at mezz.jei.startup.JeiStarter.start(JeiStarter.java:69) [?:7.7.1.137]
at mezz.jei.startup.ClientLifecycleHandler.startJEI(ClientLifecycleHandler.java:147) [?:7.7.1.137]
at mezz.jei.startup.ClientLifecycleHandler.setupJEI(ClientLifecycleHandler.java:140) [?:7.7.1.137]
at mezz.jei.startup.ClientLifecycleHandler.lambda$new$3(ClientLifecycleHandler.java:106) [?:7.7.1.137]
at mezz.jei.startup.ClientLifecycleHandler$$Lambda$30638/1358152301.accept(Unknown Source) [?:7.7.1.137]
at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:247) [eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:239) [eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus$$Lambda$2829/358945794.invoke(Unknown Source) [eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus$$Lambda$3114/27796563.invoke(Unknown Source) [eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) [eventbus-4.0.0.jar:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) [eventbus-4.0.0.jar:?]
at net.minecraftforge.client.ForgeHooksClient.onRecipesUpdated(ForgeHooksClient.java:779) [?:?]
at net.minecraft.client.network.play.ClientPlayNetHandler.func_199525_a(ClientPlayNetHandler.java:1314) [?:?]
at net.minecraft.network.play.server.SUpdateRecipesPacket.func_148833_a(SourceFile:27) [?:?]
at net.minecraft.network.play.server.SUpdateRecipesPacket.func_148833_a(SourceFile:15) [?:?]
at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) [?:?]
at net.minecraft.network.PacketThreadUtil$$Lambda$35850/487067812.run(Unknown Source) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) [?:?]
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213160_bf(SourceFile:103) [?:?]
at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:948) [?:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) [?:?]
at net.minecraft.client.main.Main.main(Main.java:184) [?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.19.jar:36.2]
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$484/1894638973.call(Unknown Source) [forge-1.16.5-36.2.19.jar:36.2]
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?]
at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?]
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?]

This repository is for the Fabric version of Vanilla Hammers - you're probably looking for the Forge version, which can be found here :)

(Forge version isn't maintained by me, so your best bet is to open an issue on their tracker)