Gradle Sync Error

[maven-y]

I tried to import your code and found some issues in the project

apprtc-android-master\apprtc-android-master\build.gradle

Error:(12, 0) Could not set unknown property 'webrtcRevision' for root project 'apprtc-android-master' of type org.gradle.api.Project.
Open File

[MuhammadPen]

Same Issue...

[Liliana99]

Same issue

[hesijie]

Same issue.

[JayDwivedi]

same issue

[JayDwivedi]

Any one have solution