Couldn't find minecraftforge mapped snapshot

[Mason Walter]

So I moved from trying to mod in 1.12.2 to 1.15 and I tried importing the build.gradle file in IntelliJ and it gives me these errors...

 

Could not find net.minecraftforge:forge:1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.
Required by:
    project :

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

 

and 

 

Could not find net.minecraftforge:forge:1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.
Searched in the following locations:
  - https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.pom
  - https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.jar
  - file:/Users/ericwalter/.gradle/caches/forge_gradle/bundeled_repo/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.pom
  - file:/Users/ericwalter/.gradle/caches/forge_gradle/bundeled_repo/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.jar
  - https://libraries.minecraft.net/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.jar
  - https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.pom
  - https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1/forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1.jar
Required by:
    project :

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

 

I looked into the build.gradle file and these are the repositories I have...

 

repositories {
        maven { url = 'https://files.minecraftforge.net/maven' }
        jcenter()
        mavenCentral()
    } 

 

What should I do?

[DaemonUmbra]

The file it's missing is not hosted in a repository, it is generated and Gradle is tricked into accepting it.

The real error is further up in the log.