bonjour quand je tape la ligne setupDecompWorkspace j'ai cette erreur a la fin pk svp ?

C:\Users\killi\Desktop\Dev\Mod minecraft\Erina Mod>gradlew setupDecompWorkspace
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/4.9/userguide/gradle_daemon.html.
Daemon will be stopped at the end of the build stopping after processing

> Configure project :
New Dep: net.minecraftforge:forge:1.12.2-14.23.5.2855_mapped_snapshot_20171003-1.12

FAILURE: Build failed with an exception.

* What went wrong:
Task 'setupDecompWorkspace' not found in root project 'Erina Mod'.

* Try:
Run gradlew tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/4.9/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 21s

C:\Users\killi\Desktop\Dev\Mod minecraft\Erina Mod>

 

1.12 is no longer supported on this forum.
Please update to a modern version of Minecraft to receive support.

i don't like the new minecraft version...