I am on Windows 10 with Windows Version 10.0.17763.379, Java JRE1.8.0_192, and Java JDK1.8.0_192. I downloaded the mdk of Forge 1.13.2 - 25.0.103. When I copied all of the contents of the zip file into a folder on my desktop called ModTest, I ran gradlew setupDecompWorkspace inside the ModTest folder. When I ran the command, I was given this:
I then tried the same thing but with Forge 1.12.2 - 14.23.5.2768, and it went through perfectly. What might have caused this to happen? I even tried redownloading Forge 1.13.2 - 25.0.103 to see if something didn't download for some reason, but it gave me the same error.