在指定位置找不到 Flutter SDK 在 Android Studio 中

我正在安装Flutter 翼，除了上面指定的一件事外，一切都很好.

弗利特doctor 说:

$flatterdoctor -v

[√] Flutter (Channel beta, v0.7.3, on Microsoft Windows [Version 10.0.17134.228], locale nl-NL)
    • Flutter version 0.7.3 at C:\Flutter\flutter_windows_new\flutter
    • Framework revision 3b309bda07 (13 days ago), 2018-08-28 12:39:24 -0700
    • Engine revision af42b6dc95
    • Dart version 2.1.0-dev.1.0.flutter-ccb16f7282

[√] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at C:\Users\iwijsman\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 27.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)
    • All Android licenses accepted.

[√] Android Studio (version 3.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 28.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)

[√] IntelliJ IDEA Community Edition (version 2018.2)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.2.2
    • Flutter plugin version 28.0.4
    • Dart plugin version 182.4323.44

[√] Connected devices (1 available)
    • Pixel 2 • FA83P1A01724 • android-arm64 • Android 9 (API 28)

• No issues found!

我已经将请求的路径添加到变量中，并且在Android studio中，插件已经安装并应用，但是我仍然收到这个错误.

请帮帮我，我哪里做错了？