Post array using http in flutter

[kalidAbderhuman]

D/ViewRootImpl@431c4b6MainActivity: ViewPostIme pointer 1 I/flutter (21412): gggggg I/flutter (21412): [5, 2, 1, 3] I/flutter (21412): 200 E/flutter (21412): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: FormatException: Unexpected end of input (at character 1) E/flutter (21412): E/flutter (21412): ^ E/flutter (21412): E/flutter (21412): #0 _ChunkedJsonParser.fail (dart:convert-patch/convert_patch.dart:1404:5) E/flutter (21412): #1 _ChunkedJsonParser.close (dart:convert-patch/convert_patch.dart:522:7) E/flutter (21412): #2 _parseJson (dart:convert-patch/convert_patch.dart:41:10) E/flutter (21412): #3 JsonDecoder.convert (dart:convert/json.dart:506:36) E/flutter (21412): #4 JsonCodec.decode (dart:convert/json.dart:157:41) E/flutter (21412): #5 jsonDecode (dart:convert/json.dart:96:10) E/flutter (21412): #6 _preferenceState.add_preference (package:hulue/ui/cv_from/components/preference.dart:453:30) E/flutter (21412): E/flutter (21412):