[Flutter] no gradle tool in "Tool Windows" in Android Studio

I have flutter project. I use Android studio. I have installed gradle plugin but I don't see gradle bar, or even in "View" -> "Tool Windows" there is no gradle.

I opened build.gradle file, I don't see promt "Sync now". I looked in menu "File" -> "Sync project with Gradle Files" I tried to find other mentions in menu

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