title: Flutter :type '_InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'String'
body: <p>I am trying to user Dio Client for making API calls. While I receive the response It throws an error</p>
  
  <blockquote>
    <p>'_InternalLinkedHashMap' is not a subtype of type 'String'</p>
  </blockquote>
  
  <p>Trying to resolve it but I can't. Below is the code</p>
  
  <pre><code>
    Future&lt;dynamic&gt; get(
        String uri, {
          Map&lt;String, dynamic&gt; queryParameters,
          Options options,
          CancelToken cancelToken,
          ProgressCallback onReceiveProgress,
        }) async {
      try {
        final Response response = await _dio.get(
          uri,
          queryParameters: queryParameters,
          options: options,
          cancelToken: cancelToken,
          onReceiveProgress: onReceiveProgress,
        );
        return response.data;
      } catch (e) {
        print(e.toString());
        throw e;
      }
    }
  } 
  </code></pre>
  
  <p>Post Api Call</p>
  
  <pre><code>Future&lt;News&gt; getPosts() async {
      try {
        final res = await _dioClient.get(Endpoints.getPosts);
        return News.fromJson(res);
      } catch (e) {
        print(e.toString());
        throw e;
      }
    }
  </code></pre>
  
  <p>Model class uses built_value</p>
  
  <pre><code>abstract class News implements Built&lt;News, NewsBuilder&gt; {
    News._();
  
    factory News([updates(NewsBuilder b)]) = _$News;
  
    @BuiltValueField(wireName: 'status')
    String get status;
    @BuiltValueField(wireName: 'totalResults')
    int get totalResults;
    @BuiltValueField(wireName: 'articles')
    BuiltList&lt;Articles&gt; get articles;
    String toJson() {
      return json.encode(serializers.serializeWith(News.serializer, this));
    }
  
    static News fromJson(String jsonString) {
  
      return serializers.deserializeWith(
          News.serializer, json.decode(jsonString));
    }
  
    static Serializer&lt;News&gt; get serializer =&gt; _$newsSerializer;
  }
  
  </code></pre>
  
  <p>Serializer class</p>
  
  <pre><code>@SerializersFor([
    News,
    Articles,
    Source,
  ])
  final Serializers serializers = (_$serializers.toBuilder()..addPlugin(StandardJsonPlugin())).build();
  </code></pre>
  
  <p>help me how to solve it </p>