This project uses Crashlytics for crashes and error reporting. To be able to use this service, you will have to add crashlytics.properties file to app module. The properties file should look something like the following:
apiSecret=your-crashlytics-api-secret
apiKey=your-crashlytics-api-key
Make sure not to commit the file to public code repositories. If you need access to the main project's crashlytics.properties file, please contact the project admin.