Hello,
A new release of IntelliJ is available: 2020.2.4 (202.8194.7 build).
However the Flutter plugin is incompatible with this version.
Any ETA when it will be?
Just to add some info, we are seeing this notification:

Yea same here, cant do any dev now

I also encountered this problem, you need to uninstall and reinstall the Flutter plugin. Version: 50.0 supports idea 2020.2.4. Reference: https://plugins.jetbrains.com/plugin/9212-flutter/versions
I also encountered this problem, you need to uninstall and reinstall the Flutter plugin. Version: 50.0 supports idea 2020.2.4. Reference: https://plugins.jetbrains.com/plugin/9212-flutter/versions
After I reinstall it, it can be used normally.
Fyi @stevemessick
There is a new version available now for IntelliJ 2020.2.4. This one won't automatically update. You need to uninstall version 51 then look for the version named SNAPSHOT.
PluginsInstalledDisable and choose UninstallWe plan to release version 52 at the end of the week. If you have already switched to version 50, as suggested above, you might want to wait for that.
Most helpful comment
I also encountered this problem, you need to uninstall and reinstall the Flutter plugin. Version: 50.0 supports idea 2020.2.4. Reference: https://plugins.jetbrains.com/plugin/9212-flutter/versions