How to solve this Error ? When I'm trying to run my app I got this error: Caused by: org.gradle.api.internal.artifacts.ivyservice

[UsamaAslam478]

Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all files for configuration ':app:debugCompileClasspath'.

I googled it, but the solutions which I found on Google didn't help me. I still got this error. Can someone explain me what is the issue?