Error when importing

[jasonjcornwell]

I have added this package to my yaml file and done packages get. But I get an error whenever I import it.

Target or URI doesn't exist: 'package:wifi/wifi.dart'

Flutter Doctor:
C:\Repo\flutter\bin\flutter.bat doctor --verbose
[√] Flutter (Channel beta, v1.3.8, on Microsoft Windows [Version 10.0.17763.379], locale en-GB)
• Flutter version 1.3.8 at C:\Repo\flutter
• Framework revision e5b1ed7a7f (5 weeks ago), 2019-03-06 14:23:37 -0800
• Engine revision f4951df193
• Dart version 2.2.1 (build 2.2.1-dev.0.0 571ea80e11)

[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at C:\Users\Jason\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_152-release-1248-b01)
• All Android licenses accepted.

[√] Android Studio (version 3.3)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 34.0.1
• Dart plugin version 182.5215
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[!] VS Code (version 1.32.3)
• VS Code at C:\Users\Jason\AppData\Local\Programs\Microsoft VS Code
X Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[√] Connected device (1 available)
• ONEPLUS A6013 • ef41f3a4 • android-arm64 • Android 9 (API 28)

! Doctor found issues in 1 category.
Process finished with exit code 0