Le_gnss' service spontaneously disconnected

After I have run my program around 2 hrs, NAD is stopped and get below pic. error.
My program is get gnss-position every sec and also send the data by using LTE data.

Have any way the fixed this error??

Is it ok if restart the app?

Yes, it is okay. But still stop in next 2 hours.

how about getting GNSS position every minute instead of every second?