Android - Issue with Main app having product flavors different than the dependant module

So I have a android project with product flavor - flavor1/ flavor2

Now I need to add a dependent module to it with product flavors - flavor3/ flavor4.

This is how I am adding the dependency in build.gradle (app):

dependencies {
  .....
    implementation (project(':myModule')){
        transitive = false
    }
  ....
}

Now when I am building my android project with assembleFlavor1Debug, it gives me error:

Cannot choose between the following variants of project :myModule:
  - flavor3DebugRuntime
  - flavor3ReleaseRuntime
  - flavor4DebugRuntime
  - flavor4DebugRuntime

- Variant 'flavor3DebugAndroidTestCompile' capability mainApp:myModule:
      - Unmatched attributes:
          - Required com.android.build.api.attributes.BuildTypeAttr 'release' but no value provided.
          - Required default 'flavor1' but no value provided.

  

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