麻烦问一下，上传报错的问题

[ProfessionalMe]

我的DIO版本号是： dio: ^5.2.1+1 sdk是：0.5.0 上传图片提示这个错，但是不影响上传。

`[🔔 Dio] _MultiStream<List> cannot be used to imply a default content-type, please set a proper content-type in the request.

0 ImplyContentTypeInterceptor.onRequest (package:dio/src/interceptors/imply_content_type.dart:45:36)

     #1      DioMixin.fetch.requestInterceptorWrapper.<anonymous closure>.<anonymous closure> (package:dio/src/dio_mixin.dart:385:26)
     #2      new Future.<anonymous closure> (dart:async/future.dart:256:37)
     #3      Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:18:15)
     #4      _Timer._runTimers (dart:isolate-patch/timer_impl.dart:398:19)
     #5      _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
     #6      _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:189:12)

[🔔 Dio] _MultiStream<List> cannot be used to imply a default content-type, please set a proper content-type in the request.

0 ImplyContentTypeInterceptor.onRequest (package:dio/src/interceptors/imply_content_type.dart:45:36)

     #1      DioMixin.fetch.requestInterceptorWrapper.<anonymous closure>.<anonymous closure> (package:dio/src/dio_mixin.dart:385:26)
     #2      new Future.<anonymous closure> (dart:async/future.dart:256:37)
     #3      Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:18:15)
     #4      _Timer._runTimers (dart:isolate-patch/timer_impl.dart:398:19)
     #5      _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
     #6      _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:189:12)`

[bachue]

@ProfessionalMe 请升级到 v0.6.0 再试试看

[yinxulai]

fix in #87