ShiftedGaming

Hello. I am currently trying to make a mod that uses the Firebase Admin SDK as a database backend. I've been having issues getting it to work though, and the closest I've been to is this. My game will start and then crash. I have a feeling it has something to do with the way I'm implementing the Firebase Admin SDK as my game runs perfectly fine without it. Minecraft error: java.lang.NoSuchFieldError: JAVA_LETTER_OR_DIGIT at net.minecraftforge.common.config.Configuration.<clinit>(Configuration.java:60) at net.minecraftforge.common.ForgeModContainer.<init>(ForgeModContainer.java:108) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:339) at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:488) at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208) at net.minecraft.client.Minecraft.startGame(Minecraft.java:451) at net.minecraft.client.Minecraft.run(Minecraft.java:360) at net.minecraft.client.main.Main.main(Main.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) at GradleStart.main(GradleStart.java:26) build.gradle: Pastebin If anybody could help me, that would be greatly appreciated!