celll id issue

[Mujjafar-Momin]

i was using to get only carrier name but I am getting issue on this line
cellId: CellId.fromMap(map['cellId']),

E/flutter ( 8993): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: type 'Null' is not a subtype of type 'Map<dynamic, dynamic>'
E/flutter ( 8993): #0 new TelephonyInfo.fromMap (package:carrier_info/src/models/android_carrier_data.dart:382:33)
E/flutter ( 8993): #1 new AndroidCarrierData.fromMap. (package:carrier_info/src/models/android_carrier_data.dart:64:58)
E/flutter ( 8993): #2 MappedListIterable.elementAt (dart:_internal/iterable.dart:415:31)
E/flutter ( 8993): #3 ListIterator.moveNext (dart:_internal/iterable.dart:344:26)
E/flutter ( 8993): #4 new List.from (dart:core-patch/array_patch.dart:37:17)
E/flutter ( 8993): #5 new AndroidCarrierData.fromMap (package:carrier_info/src/models/android_carrier_data.dart:63:22)
E/flutter ( 8993): #6 CarrierInfo.getAndroidInfo (package:carrier_info/src/carrier_info.dart:12:31)
E/flutter ( 8993):
E/flutter ( 8993): #7 SimName.init (package:ffclite/utils/app_device_info.dart:52:26)
E/flutter ( 8993):
E/flutter ( 8993): #8 main (package:ffclite/main.dart:23:3)
E/flutter ( 8993):
please check

[LarssK-TS]

did you manage to resolve this?

[saiful00000]

What is you android version?