Flutter错误：“ MultipartRequest”不是类型

问题描述

现在，我在运行Flutter upgrade后收到此错误，但仍然出现如下错误。如果您有任何解决方案，请帮助我。谢谢！！！

mac@Macs-MacBook-Air cred_app % Flutter clean
Building Flutter tool...                                          
../Flutter/packages/Flutter_tools/lib/src/reporting/crash_reporting.dart:161:18: Error: 'MultipartRequest' isn't a type.
      final http.MultipartRequest req = http.MultipartRequest('POST',uri);
                 ^^^^^^^^^^^^^^^^
../Flutter/packages/Flutter_tools/lib/src/reporting/crash_reporting.dart:161:41: Error: Method not found: 'MultipartRequest'.
      final http.MultipartRequest req = http.MultipartRequest('POST',uri);
                                        ^^^^^^^^^^^^^^^^
../Flutter/packages/Flutter_tools/lib/src/reporting/crash_reporting.dart:172:26: Error: Getter not found: 'multipartfile'.
      req.files.add(http.multipartfile.fromString(
                         ^^^^^^^^^^^^^

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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