Show API errors in toast

At the moment, if we have an error when requesting something from the API, for example when searching, this is not handled in any way and the error is not shown. There is a suggestion to show an error in [toast](https://github.com/magicismight/react-native-root-toast). Or does anyone have any other thoughts on this matter?

No files, tests, or entry points are named. Trace the API request paths, starting with search, and inspect how failures are currently handled. Resolve whether react-native-root-toast is the intended dependency, then define the affected error cases and verify that each displays an appropriate toast.

Written by the indexing model from the issue text.