As the Known Issues section of the Android Studio 4.1 Preview page notes, if you are getting this error in Android Studio 4.1 Canary 9, it means that you have a locally installed Kotlin plugin that is not compatible with the new IDE.
To resolve it, you should delete the Kotlin folder from the following locations (from the above linked page), depending on your operating system:
Linux: ~/.local/share/Google/AndroidStudioPreview4.1
Windows: C:\Users\YourUserName\AppData\Roaming\Google\AndroidStudioPreview4.1
macOS: ~/Library/Application Support/Google/AndroidStudioPreview4.1
For Linux and macOS, ~
refers to your home directory, and a directory can be removed from the command line (Terminal) with rm -rf directory_name_here
.
There is no need to install a replacement Kotlin plugin, as it is bundled in that version of Android Studio.