Flutter app doesn't run. It gives this type of Error

Question

• Error running Gradle: ProcessException: Process "/var/www/html/Happy/Flutter/demo/android/gradlew" exited abnormally:

Configure project :app Observed package id 'build-tools;debian' in inconsistent location '/usr/lib/android-sdk/build-tools/27.0.1' (Expected '/usr/lib/android-sdk/build-tools/debian') Observed package id 'build-tools;debian' in inconsistent location '/usr/lib/android-sdk/build-tools/27.0.1' (Expected '/usr/lib/android-sdk/build-tools/debian') Checking the license for package Android SDK Build-Tools 28.0.3 in /usr/lib/android-sdk/licenses Warning: License for package Android SDK Build-Tools 28.0.3 not accepted. Checking the license for package Android SDK Platform 26 in /usr/lib/android-sdk/licenses Warning: License for package Android SDK Platform 26 not accepted.

FAILURE: Build failed with an exception.

• Where: Build file '/var/www/html/Happy/Flutter/demo/android/build.gradle' line: 26

• What went wrong: A problem occurred evaluating root project 'android'.

  A problem occurred configuring project ':app'. Failed to install the following Android SDK packages as some licences have not been accepted. platforms;android-26 Android SDK Platform 26 build-tools;28.0.3 Android SDK Build-Tools 28.0.3 To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager. Alternatively, to transfer the license agreements from one workstation to another, see http://d.android.com/r/studio-ui/export-licenses.html

  Using Android SDK: /usr/lib/android-sdk

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 2s Command: /var/www/html/Happy/Flutter/demo/android/gradlew app:properties

Please review your Gradle project setup in the android/ folder.

Answer 1

Try to run flutter doctor --android-licenses and then accept all licenses