title: Flutter taking an unexpectedly long time for connecting to browser
body: <p>I'm building flutter web project and after implenting login page via firebase I ran flutter run -d chrome.
  But it's stuck while attempting to connect to browser, its just attempting for endless time without giving any error messages. Status bar:</p>
  
  <pre><code>λ flutter run -d chrome
  Launching lib\main.dart on Chrome in debug mode...
  Building application for the web...                                20,2s
  Attempting to connect to browser instance..                             
  (This is taking an unexpectedly long time.)       \
  </code></pre>
  
  <p>Flutter doctor:</p>
  
  <pre><code>λ flutter doctor
  Doctor summary (to see all details, run flutter doctor -v):
  [√] Flutter (Channel master, v1.10.11-pre.2, on Microsoft Windows [Version 10.0.18362.356], locale ru-RU)
  [X] Android toolchain - develop for Android devices
      X Unable to locate Android SDK.
        Install Android Studio from: https://developer.android.com/studio/index.html
        On first launch it will assist you in installing the Android SDK components.
        (or visit https://flutter.dev/setup/#android-setup for detailed instructions).
        If the Android SDK has been installed to a custom location, set ANDROID_HOME to that location.
        You may also want to add it to your PATH environment variable.
  
  [√] Chrome - develop for the web
  [!] Android Studio (not installed)
  [√] VS Code (version 1.38.1)
  [√] Connected device (2 available)
  
  ! Doctor found issues in 2 categories.
  </code></pre>
  
  <p>pubspec.yaml:</p>
  
  <pre><code>version: 1.0.0+1
  
  environment:
    sdk: "&gt;=2.1.0 &lt;3.0.0"
  
  dependencies:
    flutter:
      sdk: flutter
    firebase: ^5.0.0
    firebase_auth: 
  </code></pre>