My project works and builds successfully on my Mac but I cloned from github and although Android Studio appears to work normally, the project wouldn't build. I setup this project using Kotlin DSL.
Gradle sync failed: could not find extension implementation class org.jetbrains.kotlin.idea.scripting.gradle.roots.GradleBuildRoot
Tried invalidate cache, removed all .gitignore rules but it's still the same. Any ideas?
I had the same issue (Note : Running Linux/Ubuntu 20.04 LTS and Android Studio 4.1.1).
Things I tried that did NOT work and error persisted :
.gradle and .m2 folders1.4.21 to 1.4.10What did work :
As soon as I moved the project back to the original location I would start getting the same error. This lead me to believe it was some sort of caching issue, separate from the caches "invalidated".
Solution :
Android Studio / Intellij creates a hidden folder called :
On Linux :
AS : ~/.cache/Google/AndroidStudioX.X
IJ : ~/.cache/Jetbrains/IntelliJIdea2020.X
On Mac :
AS : ~/Library/Caches/Google/AndroidStudioX.X
IJ : ~/Library/Caches/Jetbrains/IntelliJIdea2020.X
On Windows:
AS : %HOME%\AppData\Local\Google\AndroidStudioX.X
IJ : %HOME%\AppData\Local\Jetbrains\IntelliJIdea2020.X
Inside this folder are other various folders, however I removed the relevant workspace file (workspace/[project name].[hashed value].xml) after which problem went away when opening the project again, from its original location.
So it appears that "Invalidate Caches / Restart" does not "Invalidate" all caches!
I hope this resolves you problem!
Update
As this answer has had quite a few upvotes it would appear that this might be a ongoing bug with Intellij. If anyone has this problem, before resolving with the suggested solution consider checking there isn't an open issue on the bug tracker and submitting a new issue : https://youtrack.jetbrains.com/issues
Feel free to edit this update with issue if one is opened.
Update 2
Issue opened by @GeniusRUS :