Add Beneficiary bugs fixed #2

lib/api/services/beneficiary_service.dart

@@ -1,5 +1,6 @@
 import 'dart:developer';
 import 'package:dio/dio.dart';
+import 'package:kmobile/core/errors/exceptions.dart';
 import 'package:kmobile/data/models/ifsc.dart';
 import 'package:kmobile/data/models/beneficiary.dart';
 
@@ -40,8 +41,12 @@ class BeneficiaryService {
       if (e.response?.statusCode == 404) {
         throw Exception('INVALID IFSC CODE');
       }
+      else if (e.response?.statusCode == 401) {
+        throw Exception('INVALID IFSC CODE');
+      }
     } catch (e) {
-      rethrow;
+      throw UnexpectedException(
+          'Unexpected error during login: ${e.toString()}');
     }
     return Ifsc.fromJson({});
   }
@@ -118,4 +123,4 @@ class BeneficiaryService {
       throw Exception('Unexpected error: ${e.toString()}');
     }
   }
-}
+}