just work without mods but when i put just one mod crash, also before this i was playing with a modpack and the next day just wont load.

even modpacks like medieval minecraft crash or just never load

this is the error

RuntimeException: Error creating Mixin config additionalentityattributes.mixins.json for mod additionalentityattributes

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)

MixinInitialisationError: Error initialising mixin config additionalentityattributes.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

IllegalArgumentException: The specified resource 'additionalentityattributes.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

We are not the Fabric mod loader. If you would like help with Forge, post a debug.log pertaining to Forge. Otherwise, ask wherever Fabric has their support.