get "Authorization has been denied for this request" when send post method with token

I try to send post method with token but I get this error message "Authorization has been denied for this request"

and when I try that on postman work properly!!

may code:

Map<String,String> headers = {'Content-Type':'application/json','Accept': 'application/json','authorization':'Bearer $token'};
final msg = jsonEncode({ 'ID': widget._address.ID,
  'State': '15',
  'City': '168',
  'Plaque': plaqueController.text,
  'Unit': unitController.text,
  'Address': addressController.text,
  'Name': nameController.text,
  'Mobile': phoneController.text,
  'Tel': telController.text,
  'PostalCode': postalCodeController.text,
  'latlng': widget.location.latitude.toString()+','+widget.location.longitude.toString()
});

print("work function");
print(msg);
var url = "https://2sote.com/api/services/UserAddressEdit";
var body = await post(url,body: msg ,headers: headers);