The update to the v1.6 IDE plugin failed on my machine and now it's warning that "File '~\AppData\Roaming\JetBrains\IntelliJIdea2021.2\plugins\Kotlin\lib\kotlin-idea.jar' contains invalid plugin descriptor" after each restart. It seems 1.5 is still installed, and it does not find the update again. How can I force the update again?