Both Content-Length and Transfer-Encoding are specified, at most one is allowed

[vonqo]

Request:

      http.Response response = await http.post(
          Uri.parse(url),
          headers: {
            'Content-Type': 'application/json'
          },
          body: requestDto.toRawJson(),
          encoding: Encoding.getByName("utf-8")
      );
      
      /// Json encoded request length
      requestDto.toRawJson().length; // ==> 608

And then http package throws the following exception:

 │ #0   IOClient.send (package:http/src/io_client.dart:61:7)
 │ #1   <asynchronous suspension>
 │ #2   BaseClient._sendUnstreamed (package:http/src/base_client.dart:93:32)
 │ #3   <asynchronous suspension>
 │ #4   _withClient (package:http/http.dart:164:12)
 │ #5   <asynchronous suspension>
 │ #6   Future.timeout.<anonymous closure> (dart:async/future_impl.dart)
 │ #7   <asynchronous suspension>
 ├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
 │ ⛔ Both Content-Length and Transfer-Encoding are specified, at most one is allowed

I tried to declare both Content-Length and Transfer-Encoding as null and there was no difference.

[jafar260698]

Did you find any answer for this, right now I am facing such situation that network is giving me this question