Ionic build error : You have not accepted the license agreements of the following SDK components: [Android SDK Platform 24]

Install the license:

mkdir "%ANDROID_HOME%\licenses"

echo |set /p="8933bad161af4178b1185d1a37fbf41ea5269c55" > "%ANDROID_HOME%\licenses\android-sdk-license"

In Command Prompt, go to ANDROID_HOME\tools\bin

Then run the command, sdkmanager --licenses

Accept the licenses you want when it is prompted.

Install Platform 24 (Android 7) solved this problem