java.lang.NoClassDefFoundError: net/fabricmc/tinyremapper/IMappingProvider
at me.modmuss50.optifabric.mod.OptifabricSetup.run(OptifabricSetup.java:46)
at java.util.ArrayList.forEach(Unknown Source)
at com.chocohead.mm.Plugin.getMixins(Plugin.java:340)
at org.spongepowered.asm.mixin.transformer.PluginHandle.getMixins(PluginHandle.java:128)
at org.spongepowered.asm.mixin.transformer.MixinConfig.postInitialise(MixinConfig.java:796)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:568)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.select(MixinProcessor.java:462)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.checkSelect(MixinProcessor.java:438)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:290)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:50)
at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:117)
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:384)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:160)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at oolloo.jlw.Wrapper.invokeMain(Wrapper.java:71)
at oolloo.jlw.Wrapper.main(Wrapper.java:51)
Caused by: java.lang.ClassNotFoundException: net.fabricmc.tinyremapper.IMappingProvider
at java.lang.ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:226)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 31 more

Use Fabric Loader 0.14.25. also next time please do a search to see if your issue has already been solved.

I am using the automatic installation feature of pcl2 and the jar files do not come from me

Errors still reported after switching to fabric 0.14.25:
java.lang.RuntimeException: Failed to remap jar
at me.modmuss50.optifabric.mod.OptifineSetup.remapOptifine(OptifineSetup.java:234)
at me.modmuss50.optifabric.mod.OptifineSetup.remapOptifine(OptifineSetup.java:219)
at me.modmuss50.optifabric.mod.OptifineSetup.getRuntime(OptifineSetup.java:167)
at me.modmuss50.optifabric.mod.OptifabricSetup.run(OptifabricSetup.java:46)
at java.util.ArrayList.forEach(Unknown Source)
at com.chocohead.mm.Plugin.getMixins(Plugin.java:340)
at org.spongepowered.asm.mixin.transformer.PluginHandle.getMixins(PluginHandle.java:128)
at org.spongepowered.asm.mixin.transformer.MixinConfig.postInitialise(MixinConfig.java:796)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:568)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.select(MixinProcessor.java:462)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.checkSelect(MixinProcessor.java:438)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:290)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:50)
at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:117)
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:383)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:160)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at oolloo.jlw.Wrapper.invokeMain(Wrapper.java:71)
at oolloo.jlw.Wrapper.main(Wrapper.java:51)
Caused by: java.nio.file.AccessDeniedException: C:\WINDOWS\TEMP\optifabric4899657385857613865\Optifine-jarofthefree.jar
at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsLinkSupport.getRealPath(Unknown Source)
at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)
at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)
at com.sun.nio.zipfs.ZipFileSystemProvider.removeFileSystem(ZipFileSystemProvider.java:322)
at com.sun.nio.zipfs.ZipFileSystem.close(ZipFileSystem.java:307)
at net.fabricmc.tinyremapper.OutputConsumerPath.addNonClassFiles(OutputConsumerPath.java:187)
at net.fabricmc.tinyremapper.OutputConsumerPath.addNonClassFiles(OutputConsumerPath.java:143)
at net.fabricmc.tinyremapper.OutputConsumerPath.addNonClassFiles(OutputConsumerPath.java:135)
at net.fabricmc.tinyremapper.OutputConsumerPath.addNonClassFiles(OutputConsumerPath.java:127)
at me.modmuss50.optifabric.mod.OptifineSetup.remapOptifine(OptifineSetup.java:228)
... 33 more
Suppressed: java.nio.file.AccessDeniedException: C:\WINDOWS\TEMP\optifabric4899657385857613865\Optifine-remapped.jar
at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsLinkSupport.getRealPath(Unknown Source)
at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)
at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)
at com.sun.nio.zipfs.ZipFileSystemProvider.removeFileSystem(ZipFileSystemProvider.java:322)
at com.sun.nio.zipfs.ZipFileSystem.close(ZipFileSystem.java:307)
at net.fabricmc.tinyremapper.OutputConsumerPath.close(OutputConsumerPath.java:226)
at me.modmuss50.optifabric.mod.OptifineSetup.remapOptifine(OptifineSetup.java:233)
... 33 more

Which launcher are you using? Why are you storing minecraft files in a permissions denied temp folder? Why are you using a modified MC jar file?

I'm using pcl2, I don't understand your question (I'm a newbie), I store my mc folder on drive d