Using Expo and React Native to handle problems in Tanstack Query poses distinct difficulties, particularly in projects that use app-based folder hierarchies. This tutorial discusses Tanstack Query error management techniques and explains why errors can occasionally return null even when explicit error handling attempts have been made. Tanstack Query's onError and useQuery hooks provide examples of how developers can accomplish more dependable error display, guaranteeing that users receive feedback when problems occur with network or data fetching requests. Making reliable and easy-to-use mobile applications requires this.