Autocomplete does not work in Android Studio

[babakoto]

After update Flutter , flutter plugin and Android studio autocomplete does not work

github.com/flutter/flutter.

Steps to Reproduce

Version info

[√] Flutter (Channel stable, v1.9.1+hotfix.4, on Microsoft Windows [Version 10.0.17763.805], locale en-BE)
• Flutter version 1.9.1+hotfix.4 at C:\Users\toto\Downloads\flutterV1.5\flutter
• Framework revision cc949a8e8b (2 weeks ago), 2019-09-27 15:04:59 -0700
• Engine revision b863200c37
• Dart version 2.5.0

[!] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at C:\Users\toto\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses

[√] Android Studio (version 3.5)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 40.1.2
• Dart plugin version 191.8423
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] IntelliJ IDEA Ultimate Edition (version 2019.1)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA 2019.1
• Flutter plugin version 35.2.2
• Dart plugin version 191.6183.88

[√] VS Code (version 1.38.1)
• VS Code at C:\Users\toto\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.4.1

[√] Connected device (1 available)
• ALE L21 • W3D7N16812020354 • android-arm64 • Android 6.0 (API 23)

! Doctor found issues in 1 category.

[kenzieschmoll]

Marking as a dupe of #3946, which sounds like it is related to dart-lang/sdk#38739.