Why is Android Resolution not working with mainTemplate.gradle file?

Sometimes, although the MediationAdaptersDependencies.xml is populated, the mainTemplate.gradle file’s dependency section might still be empty even after resolution or forcing resolution:

  dependencies {

      implementation fileTree(dir: 'libs', include: ['*.jar'])
      // Android Resolver Dependencies Start
      // Android Resolver Dependencies End
      **DEPS**
  }

This Play Services Resolver issue can occur if the Custom Main Manifest is currently added.

To resolve this issue with the Custom Main Manifest, remove it, resolve it, and then add it back.

For more information, see the Unity Mediation documentation.