ionic build androidエラー

✗ ionic build android

You have been opted out of telemetry. To change this, run: cordova telemetry on.
Running command: /Users/HOkaniwa/ionic_projects/my-reddit/hooks/after_prepare/010_add_platform_class.js /Users/HOkaniwa/ionic_projects/my-reddit
add to body class: platform-android
Error: Please install Android target: "android-23".

Hint: Open the SDK manager by running: /Users/HOkaniwa/Library/Android/sdk/tools/android
You will require:
1. "SDK Platform" for android-23
2. "Android SDK Platform-tools (latest)
3. "Android SDK Build-tools" (latest)