Running gradlew setup DecompWorkspace in command prompt

I ran this command and this is what I got:

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:1.15.2-31.1.0_mapped_snapshot_20190719-1.14.3

FAILURE: Build failed with an exception.

  • What went wrong:
    Task ‘setupDecompWorkspace’ not found in root project ‘GodHuntExtraSensoryPerception’.

  • 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 6s

I was wondering if I could somehow “download” or “upload” or “whatever” the ability to run the gradlew setup DecompWorkspace command? If not, how do I make the file Desktop\Minecraft Modding\GodHuntExtraSensoryPerception be able to run the gradlew setup DecompWorkspace command?