Error while coding in Intelij

Today i started coding with Intelij and Forge, after i opened the file this error log showed up 

Quote

BaseClient:test: Could not find net.minecraftforge:forgeBin:1.12.2-14.23.5.2847-PROJECT(BaseClient).
Searched in the following locations:
  - https://maven.minecraftforge.net/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - https://maven.minecraftforge.net/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - https://repo.maven.apache.org/maven2/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - https://repo.maven.apache.org/maven2/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - https://libraries.minecraft.net/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - https://libraries.minecraft.net/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - https://repo.spongepowered.org/maven/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - https://repo.spongepowered.org/maven/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - https://jitpack.io/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - https://jitpack.io/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - file:/C:/Users/mertun/.gradle/caches/minecraft/deobfedDeps/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).pom
  - file:/C:/Users/mertun/.gradle/caches/minecraft/deobfedDeps/net/minecraftforge/forgeBin/1.12.2-14.23.5.2847-PROJECT(BaseClient)/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - file:/C:/Users/mertun/Downloads/ClientBase/.gradle/minecraft/forgeBin-1.12.2-14.23.5.2847-PROJECT(BaseClient).jar
  - file:/C:/Users/mertun/Downloads/ClientBase/.gradle/minecraft/forgeBin.jar
Required by:
    project :

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

Can anyone help me?