title: Android license status unknown. Try re-installing or updating your Android SDK Manager. Android sdkmanager tool not found
body: <p>I'm installing Android SDK for the first time on Windows 10. Facing problem with sdkmanager tool. Looked up several threads for solution, but to no avail.</p>
  <p><code>C:\Users\vboppa&gt;flutter doctor -v</code></p>
  <pre><code>[√] Flutter (Channel stable, 1.20.2, on Microsoft Windows [Version 10.0.18363.959], locale en-US)
      • Flutter version 1.20.2 at C:\Boppa\myStuff\flutter
      • Framework revision bbfbf1770c (3 weeks ago), 2020-08-13 08:33:09 -0700
      • Engine revision 9d5b21729f
      • Dart version 2.9.1
  
  [!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
      • Android SDK at C:\Users\vboppa\AppData\Local\Android\sdk
      • Platform android-30, build-tools 30.0.2
      • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
      • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
      X Android license status unknown.
        Try re-installing or updating your Android SDK Manager.
        See https://developer.android.com/studio/#downloads or visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions.
  
  [!] Android Studio (version 4.0)
      • Android Studio at C:\Program Files\Android\Android Studio
      X Flutter plugin not installed; this adds Flutter specific functionality.
      X Dart plugin not installed; this adds Dart specific functionality.
      • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
  
  [!] Connected device
      ! No devices available
  
  ! Doctor found issues in 3 categories.
  </code></pre>
  <p>When I tried to verify Android licenses, the following was the output.</p>
  <p><code>C:\Users\vboppa&gt;flutter doctor --android-licenses</code></p>
  <pre><code>Android sdkmanager tool not found (C:\Users\vboppa\AppData\Local\Android\sdk\tools\bin\sdkmanager).
  Try re-installing or updating your Android SDK,
  visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions.
  </code></pre>