Team Color, image compression for attendance verification, improved wherebouts

lib/services/background_location_service.dart

@@ -54,12 +54,14 @@ void callbackDispatcher() {
 
 /// Initialize Workmanager and register periodic background location task.
 Future<void> initBackgroundLocationService() async {
+  if (kIsWeb) return; // Workmanager is not supported on web.
   await Workmanager().initialize(callbackDispatcher);
 }
 
 /// Register a periodic task to report location every ~15 minutes
 /// (Android minimum for periodic Workmanager tasks).
 Future<void> startBackgroundLocationUpdates() async {
+  if (kIsWeb) return; // Workmanager is not supported on web.
   await Workmanager().registerPeriodicTask(
     _taskName,
     _taskName,
@@ -71,5 +73,6 @@ Future<void> startBackgroundLocationUpdates() async {
 
 /// Cancel the periodic background location task.
 Future<void> stopBackgroundLocationUpdates() async {
+  if (kIsWeb) return; // Workmanager is not supported on web.
   await Workmanager().cancelByUniqueName(_taskName);
 }