I have a problem with the compilation of the proj...

# android

[imangazalievm]

I have a problem with the compilation of the project, he says that does not know what kotlinx. I tried to install Kotlin-plugin for Android, but when you reboot after installing the Android Studio plug-in, it is not in the list of installed. Probleia was version Android Studio 1.4. Updated to 2.0 - the same situation. What can be done? Translated via Google Translate