_TypeError: Null check operator used on a null value

[sentry-io]

Sentry Issue: ANDROIDTV-6T

_TypeError: Null check operator used on a null value
  File "mosque_helpers_mixins.dart", line 136, in MosqueHelpersMixin.actualTimes.<fn>
  File "mosque_helpers_mixins.dart", line 136, in MosqueHelpersMixin.actualTimes
  File "mosque_helpers_mixins.dart", line 251, in MosqueHelpersMixin.useTomorrowTimes
  File "mosque_manager.dart", line 212, in MosqueManager.fetchMosque.<fn>
  File "Api.dart", in Api.getMosqueTimesStream
...
(25 additional frame(s) were not displayed)

[YassinNouh21]

Issue Description

A TypeError is occurring in the actualTimes method within MosqueHelpersMixin. The error appears when trying to convert prayer time strings to TimeOfDay objects, specifically in the mapping operation:

return timesOfDay(date).map((e) => e.toTimeOfDay()!.toDate(date)).toList();

Root Cause

The error occurs due to several potential scenarios:

1. Invalid time string formats in the prayer times data
2. Null values in the time strings
3. Failed parsing of time strings to TimeOfDay objects
4. Non-null assertion operator (!) used on potentially null values

Reproduction Steps

Using Direct Implementation

final mosqueManager = MosqueManager();
mosqueManager.times = Times(
  fajr: "25:70",    // Invalid hours and minutes
  dhuhr: "invalid", // Non-numeric string
  asr: "",          // Empty string
  maghrib: "10:",   // Incomplete format
  isha: null,       // Null value
);

// This will trigger the TypeError
mosqueManager.actualTimes();