The code doesn't work in SDK:2.5.0

[mesqr]

The Code of ClientSide doesn't work in Dart SDK:2.5.0
i tried to fix some of it but i couldn't make it work.
Could you update fix it ,please ?

[narcisrotllant1]

after a few days of headache have been able to make it work, who problem do you have?

[ijaznaeem]

on open following error
Unhandled exception:
LateInitializationError: Field '_completer@19341813' has not been initialized.
#0 SqlConnection._completer (package:sqlapp/sqlconnection.dart)
#1 SqlConnection._receiveData (package:sqlapp/sqlconnection.dart:276:9)
#2 _RootZone.runUnaryGuarded (dart:async/zone.dart:1546:10)
#3 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11)
#4 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
#5 _SinkTransformerStreamSubscription._add (dart:async/stream_transformers.dart:63:11)
#6 _EventSinkWrapper.add (dart:async/stream_transformers.dart:13:11)
#7 _StringAdapterSink.add (dart:convert/string_conversion.dart:238:11)
#8 _StringAdapterSink.addSlice (dart:convert/string_conversion.dart:243:7)
#25 _StreamController.add (dart:async/stream_controller.dart:554:5)
#26 new _RawSocket. (dart:io-patch/socket_patch.dart:1696:33)
#27 _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:1208:14)
#28 _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
#29 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
#30 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:120:13)
#31 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:185:5)