tried running better minecraft had just added optifine to it (for shaders) and it gave me an error while it was loading up

[Entity-Error-9558]

Uncaught exception in thread "main" java.lang.RuntimeException: Error creating Mixin config fabric-api-lookup-api-v1.mixins.json for mod fabric-api-lookup-api-v1 at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:95) at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:153) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) Caused by: org.spongepowered.asm.launch.MixinInitialisationError: Error initialising mixin config fabric-api-lookup-api-v1.mixins.json at org.spongepowered.asm.mixin.transformer.Config.create(Config.java:153) at org.spongepowered.asm.mixin.Mixins.createConfiguration(Mixins.java:100) at org.spongepowered.asm.mixin.Mixins.addConfiguration(Mixins.java:87) at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:93) ... 3 more Caused by: java.lang.IllegalArgumentException: The specified resource 'fabric-api-lookup-api-v1.mixins.json' was invalid or could not be read at org.spongepowered.asm.mixin.transformer.MixinConfig.create(MixinConfig.java:1290) at org.spongepowered.asm.mixin.transformer.Config.create(Config.java:148) ... 6 more

I didn't mess with anything in the mods, nor did i add any extra mods. I'm not entirely the smartest when it comes to running mods

[NoahvdAa]

And the error you got was....?

EDIT: Looking at the description of the modpack, it explicitly tells you that you don't need optifine for shaders

The modpack also appears to be for 1.16.5, which is not a version we support anymore, nor does the pack seem to include starlight by default.

[chorbintime]

1. You don't need Optifine for shaders
2. Optifine is extremely incompatible with our modpacks
3. This has literally nothing to do with Starlight

[NoahvdAa]

Closing this since the error isn't related to Starlight, as pointed out by chorbintime.