Gradle - Error Could not find method implementation() for arguments [com.android.support:appcompat-v7:26.0.0]

Question

I am trying to open existing android project in android studio and it gradle cannot build the app without the error

Error android studio keeps on throwing

Answer 1

So ridiculous, but I still wanna share my experience in case of that someone falls into the situation like me.

Please check if you changed: compileSdkVersion --> implementationSdkVersion by mistake