Current Workaround: exclude META-INF from embedding kotlin.
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':reobf'.<41 internal lines>
Caused by: java.lang.IllegalArgumentException
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at net.md_5.specialsource.JarRemapper.remapClassFile(JarRemapper.java:228)
at net.md_5.specialsource.JarRemapper.remapJar(JarRemapper.java:189)
at net.minecraftforge.gradle.tasks.user.reobf.ObfArtifact.applySpecialSource(ObfArtifact.java:385)
at net.minecraftforge.gradle.tasks.user.reobf.ObfArtifact.generate(ObfArtifact.java:343)
at net.minecraftforge.gradle.tasks.user.reobf.ReobfTask.doTask(ReobfTask.java:319)<38 internal lines>
... 37 more
Current Workaround: exclude
META-INF
from embedding kotlin.