Gradle build failure - Could not get unknown property 'project' for ProductFlavor_Decorated

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Hi,

I am running into this issue while upgrading from build tools version 28.0.3 to 29.0.2 for my Android project.

The issue is where flavor1 is created:

flavorDimensions 'brand'
productFlavors {
    flavor1 { <<<< issue is here for some reason
        dimension 'brand'
        applicationId "..."
        manifestPlaceholders = ...
        resValue "string", "app_name", "App name"
    }
}

Anyone have an idea what is going on? It is the same exact issue as this stackoverflow