我正在尝试开发一个 flutter 应用程序，该应用程序将 http 请求发送到托管在 000webHost 上的远程 php 文件。
当我为桌面构建 Flutter 应用程序时，我设法检索了信息，一切都很好。但是，由于另一个问题（视频播放器不适用于桌面....），我想回到网络构建。
我查看了几个帖子，但没有发现与我类似的错误。有人说由于跨源请求 (CORS) 导致错误，但在我看来这不是这个问题。
当我尝试使用 http.post 检索我的数据时，出现以下错误：
browser_client.dart:87 POST https://<myadresse>.000webhostapp.com/<nameFile>.php net::ERR_HTTP2_PROTOCOL_ERROR
Uncaught (in promise) Error: XMLHttpRequest error.
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/core_patch.dart 906:28 get current packages/http/src/browser_client.dart 84:22 <fn>
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/zone.dart 1446:54 runUnary
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/future_impl.dart 150:18 handleValue
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/future_impl.dart 703:44 handleValueCallback
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/future_impl.dart 732:32 _propagateToListeners
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/future_impl.dart 526:7 [_complete]
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/stream_pipe.dart 61:11 _cancelAndValue
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/stream.dart 1302:7 <fn>
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 324:14 _checkAndCall
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 329:39 dcall
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/html/dart2js/html_dart2js.dart 37312:58 <fn>
at Object.createErrorWithStack (errors.dart:249)
at Object._rethrow (async_patch.dart:200)
at async._AsyncCallbackEntry.new.callback (zone.dart:1171)
at Object._microtaskLoop (schedule_microtask.dart:41)
at _startMicrotaskLoop (schedule_microtask.dart:50) …