error: path may not be null or empty string. path='null'

[NanyangTaiji]

the error is pointed to this in gradle synchorniztion:
android.signingConfigs.release.storeFile rootProject.file(props.keyStore)

Do I need to do something extra?

[Krammig]

It relates to the Signing of the app. That code is in this project, should not be really in my opinion.

You can comment out the following lines ;

//android.signingConfigs.release.storeFile rootProject.file(props.keyStore)
//android.signingConfigs.release.storePassword props.keyStorePassword
//android.signingConfigs.release.keyAlias props.keyAlias
//android.signingConfigs.release.keyPassword props.keyAliasPassword

That should get you going.

[piyell]

It relates to the Signing of the app. That code is in this project, should not be really in my opinion.

You can comment out the following lines ;

//android.signingConfigs.release.storeFile rootProject.file(props.keyStore)
//android.signingConfigs.release.storePassword props.keyStorePassword
//android.signingConfigs.release.keyAlias props.keyAlias
//android.signingConfigs.release.keyPassword props.keyAliasPassword

That should get you going.

comes out with another error

No signature of method: org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection.get() is applicable for argument types: () values: []
Possible solutions: grep(), grep(java.lang.Object), getAt(java.lang.String), getAt(int), wait(), max()

[Kyire-Irving]

comes out with another error
Keystore file not set for signing config release

[StephenGemin]

Just cloned the app and I ran into the same issue. The project successfully synced when I commented out the following lines in the app build.gradle.

So I just needed to comment out three more lines from the original answer and it worked.

//android.signingConfigs.release.storeFile rootProject.file(props.keyStore)
//android.signingConfigs.release.storePassword props.keyStorePassword
//android.signingConfigs.release.keyAlias props.keyAlias
//android.signingConfigs.release.keyPassword props.keyAliasPassword

//if (getGradle().getStartParameter().getTaskRequests().toString().contains("Free")) {
//    apply plugin: 'com.google.gms.google-services'
//    apply plugin: 'io.fabric'
//}