That is what I get in consol:
Microsoft Windows [Version 10.0.17134.648]
(c) 2018 Microsoft Corporation. Alle Rechte vorbehalten.
C:\Users\X>cd Mod Ordner
C:\Users\X\Mod Ordner>gradlew setupDecompWorkspace
This mapping 'snapshot_20171003' was designed for MC 1.12! Use at your own peril.
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ForgeGradle 2.3-SNAPSHOT-7764e3e
https://github.com/MinecraftForge/ForgeGradle
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Powered by MCP
http://modcoderpack.com
by: Searge, ProfMobius, R4wk, ZeuX
Fesh0r, IngisKahn, bspkrs, LexManos
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:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:extractMcpMappings SKIPPED
:genSrgs SKIPPED
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:deobfMcSRG SKIPPED
:decompileMc SKIPPED
:fixMcSources SKIPPED
:applySourcePatches SKIPPED
:remapMcSources SKIPPED
:recompileMc SKIPPED
:extractNatives FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':extractNatives'.
> Could not expand ZIP 'C:\Users\X\.gradle\caches\modules-2\files-2.1\org.lwjgl.lwjgl\lwjgl-platform\2.9.4-nightly-20150209\b84d5102b9dbfabfeb5e43c7e2828d98a7fc80e0\lwjgl-platform-2.9.4-nightly-20150209-natives-windows.jar'.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 40.203 secs
C:\Users\X\Mod Ordner>