Error: Unsupported operation: ServerSocket.bind

[zhuyonghao134123]

Error: Unsupported operation: ServerSocket.bind at Object.throw_ [as throw] (http://localhost:50675/dart_sdk.js:4339:11) at Function._bind (http://localhost:50675/dart_sdk.js:57307:17) at Function.bind (http://localhost:50675/dart_sdk.js:57295:32) at Function.bind (http://localhost:50675/dart_sdk.js:183998:30) at Function.bind (http://localhost:50675/dart_sdk.js:177277:32) at serve (http://localhost:50675/packages/shelf/src/io_server.dart.lib.js:130:70) at serve.next () at runBody (http://localhost:50675/dart_sdk.js:37699:34) at Object._async [as async] (http://localhost:50675/dart_sdk.js:37730:7) at Object.serve (http://localhost:50675/packages/shelf/src/io_server.dart.lib.js:128:18) at main$ (http://localhost:50675/packages/flutter_demo_vmcshop_app/main.dart.lib.js:461:36) at main$.next () at runBody (http://localhost:50675/dart_sdk.js:37699:34) at Object._async [as async] (http://localhost:50675/dart_sdk.js:37730:7) at main$ (http://localhost:50675/packages/flutter_demo_vmcshop_app/main.dart.lib.js:460:18) at main (http://localhost:50675/web_entrypoint.dart.lib.js:34:27) at main.next () at http://localhost:50675/dart_sdk.js:37679:33 at _RootZone.runUnary (http://localhost:50675/dart_sdk.js:37533:58) at _FutureListener.thenAwait.handleValue (http://localhost:50675/dart_sdk.js:32507:29) at handleValueCallback (http://localhost:50675/dart_sdk.js:33054:49) at Function._propagateToListeners (http://localhost:50675/dart_sdk.js:33092:17) at async._AsyncCallbackEntry.new.callback (http://localhost:50675/dart_sdk.js:32818:27) at Object._microtaskLoop (http://localhost:50675/dart_sdk.js:37794:13) at _startMicrotaskLoop (http://localhost:50675/dart_sdk.js:37800:13) at http://localhost:50675/dart_sdk.js:33309:9

[StarkZzzOoo]

me too