Could not find client-extra.jar

[MeIsDean]

When im trying to execute the command [gradlew genIntellijRuns] in my modfolder i get the error: "Could not find client-extra.jar".

I have no idea what could be wrong the error also gives me a path that doesnt exist (C:/Users/Username/.gradle/caches/forge_gradle/bundeled_repo/net/minecraft/client/1.15.2/client-1.15.2-extra.jar).

Thats the full error:
 

A problem occurred configuring root project 'firstmod'.
> Could not resolve all files for configuration ':_compileJava_1'.
   > Could not find client-extra.jar (net.minecraft:client:1.15.2).
     Searched in the following locations:
         file:/C:/Users/Dean/.gradle/caches/forge_gradle/bundeled_repo/net/minecraft/client/1.15.2/client-1.15.2-extra.jar

Possible solution:
 - Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html
 

The Possible solution is not helping at all (to me at least).

If you can find my mistake i would be very greatfull.

[Novârch]

Have you ever run 1.15.2 from the normal launcher?