I am trying to get nearby pharmacies using a GeoFlutterFire query and display them, but there are no elements in the stream after running the function.

This is the function I used to get the stream of nearby pharmacies.

Stream<List<DocumentSnapshot>> getNearbyPharmacies(LatLng userPosition, String medication) {
    final geo = GeoFlutterFire();

    GeoFirePoint center = geo.point(latitude: userPosition.latitude, longitude: userPosition.longitude);
    var collectionReference = firestore.collection('Pharmacies');
    var radius = 5.0; // radius in kilometers
    String field = 'Position';

    Stream<List<DocumentSnapshot>> stream = geo.collection(collectionRef: collectionReference)
                                            .within(center: center, radius: radius, field: field);

    return stream;
  }

And this is the code I used to check whether there are elements to display.

StreamBuilder<List<DocumentSnapshot>>(
                stream: _pharmacyStream,
                builder: (context, snapshot) {
                  if (snapshot.hasError) {
                    return Text('Error: ${snapshot.error}');
                  }
                  if (snapshot.connectionState == ConnectionState.waiting) {
                    return Center(child: CircularProgressIndicator());
                  }
                  if (!snapshot.hasData || snapshot.data == null) {
                    return Text('No data available');
                  } else {
                    var docs = snapshot.data!;
                    return Expanded(
                      child: Column(
                        children: [
                          Expanded(
                            child: ListView.builder(
                              //...
                            ),
                          ),
                        ],
                      ),
                    );
                  }
                },
)

I have already created the documents with necessary fields including a map type filed called ‘Position’, inside a collection called ‘Pharmacies’.