com.android.ide.common.process.ProcessException: Failed to execute aapt! What can I do?

just put this code inside build.gradle on the last part

configurations.all {
    resolutionStrategy {
        force 'com.android.support:support-v4:27.1.0'
    }
}

If you update the v4 v7 version to 26.0.0, you also should change the CompileSdkVersion and BuildToolsVersion to 26.0.0