Spoiler

Uncaught exception in thread "main"
java.lang.RuntimeException: Error creating Mixin config bcdt_expansion.mixins.json for mod bcdt_expansion
    at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:90)
    at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:148)
    at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:71)
    at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: org.spongepowered.asm.launch.MixinInitialisationError: Error initialising mixin config bcdt_expansion.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:88)
    ... 3 more
Caused by: java.lang.IllegalArgumentException: The requested compatibility level JAVA_17 could not be set. Level is not supported by the active JRE or ASM version (Java 16.0, ASM 9.2 (ASM10_EXPERIMENTAL))
    at org.spongepowered.asm.mixin.MixinEnvironment.setCompatibilityLevel(MixinEnvironment.java:1570)
    at org.spongepowered.asm.mixin.transformer.MixinConfig.initCompatibilityLevel(MixinConfig.java:557)
    at org.spongepowered.asm.mixin.transformer.MixinConfig.postInit(MixinConfig.java:502)
    at org.spongepowered.asm.mixin.transformer.MixinConfig.onLoad(MixinConfig.java:430)
    at org.spongepowered.asm.mixin.transformer.MixinConfig.create(MixinConfig.java:1293)
    at org.spongepowered.asm.mixin.transformer.Config.create(Config.java:148)
    ... 6 more
 

whats goin on???

 

yea i realized that after i posted it:/