Quick fix Suddenly Comes One error on my react , react native , Firebase backend project

Suddenly facing one error..

This is ride booking app..

Suddenly problem facing is

0km distance traveled showing after when rider complte the trip
Even traveled distance is 5km 20km or any.
It’s showing 0km but some time its working and showing real distance traveled .

Project is on
React js react native
Expo ..
Backend is on firebase function deployed