The game crashed whilst initializing game
Error: java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'betterstrongholds'!

Error Code: -1

Heres the Crash report:

java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'betterstrongholds'!
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.lambda$invoke0$0(EntrypointUtils.java:51)
at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:49)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke(EntrypointUtils.java:35)
at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52)
at net.minecraft.class_310.(class_310.java:459)
at net.minecraft.client.main.Main.method_44604(Main.java:205)
at net.minecraft.client.main.Main.main(Main.java:51)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:468)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.RuntimeException: java.lang.IllegalStateException: Key is not followed by an equals sign on line 1:
at me.shedaniel.cloth.clothconfig.shadowed.com.moandjiezana.toml.Toml.read(Toml.java:74)
at me.shedaniel.autoconfig.serializer.Toml4jConfigSerializer.deserialize(Toml4jConfigSerializer.java:73)
at me.shedaniel.autoconfig.ConfigManager.load(ConfigManager.java:92)
at me.shedaniel.autoconfig.ConfigManager.(ConfigManager.java:53)
at me.shedaniel.autoconfig.AutoConfig.register(AutoConfig.java:66)
at com.yungnickyoung.minecraft.betterstrongholds.module.ConfigModuleFabric.init(ConfigModuleFabric.java:28)
at com.yungnickyoung.minecraft.betterstrongholds.services.FabricModulesLoader.loadModules(FabricModulesLoader.java:9)
at com.yungnickyoung.minecraft.betterstrongholds.BetterStrongholdsCommon.init(BetterStrongholdsCommon.java:16)
at com.yungnickyoung.minecraft.betterstrongholds.BetterStrongholdsFabric.onInitialize(BetterStrongholdsFabric.java:8)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:47)
... 8 more
Caused by: java.lang.IllegalStateException: Key is not followed by an equals sign on line 1:
at me.shedaniel.cloth.clothconfig.shadowed.com.moandjiezana.toml.Toml.read(Toml.java:140)
at me.shedaniel.cloth.clothconfig.shadowed.com.moandjiezana.toml.Toml.read(Toml.java:107)
at me.shedaniel.cloth.clothconfig.shadowed.com.moandjiezana.toml.Toml.read(Toml.java:72)
... 17 more

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.lambda$invoke0$0(EntrypointUtils.java:51)
at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:49)
at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke(EntrypointUtils.java:35)
at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52)
at net.minecraft.class_310.(class_310.java:459)

I've tried updating the YUNGs API, and the fabric API.

Sorry for being so late on this, but it looks like your config corrupted for some reason. If you delete the old config files and re-start the game, you should be good to go.