Urgent Fix Needed for Android E-Hailing App

My Android-based e-hailing app is in dire need of an experienced developer. The app is experiencing crashes when accessing the location tracking feature. This is not only causing inconvenience for users but could also potentially affect the business.

The app has been crashing:

- When accessing the location tracking feature

Additionally, I want to improve the app by adding a 'ride history' feature in a calendar view format.

Ideal Skills and Experience:
- Proficiency in Android app development
- Experience with location-based services
- Ability to troubleshoot crashes and bugs efficiently
- UI/UX skills for calendar view feature
- Expertise in adding new features to existing apps

Your timely assistance can help restore the functionality of the app and improve user experience.