Unsupported Module Detected while building SDK in Android Studio

[HonzaR]

Describe the issue

Compilation is not supported for the following modules: zcash-android-sdk.backend-lib.unitTest. Unfortunately, you can't have non-Gradle Java modules and Android-Gradle modules in one project. If you didn't add those intentionally, consider removing them by selecting the option below

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Expected behaviour

Actual behavior + errors

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Any extra information that might be useful in the debugging process.