Cannot be received calendar events in version 4.3.3

[yonggipo]

no problem receiving events in 4.3.2,
but when updating to 4.3.3 and receiving events,
this error appears [FREQ part is missing]

I/flutter ( 8701): INVOKE_CHANNEL_METHOD_ERROR: PlatformException(500, FREQ part is missing, null, null)
I/flutter ( 8701): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:648:7)
I/flutter ( 8701): #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
I/flutter ( 8701): <asynchronous suspension>
I/flutter ( 8701): #2      DeviceCalendarPlugin._invokeChannelMethod (package:device_calendar/src/device_calendar.dart:441:21)
I/flutter ( 8701): <asynchronous suspension>
I/flutter ( 8701): #3      _CalendarEventsPageState._retrieveCalendarEvents (package:device_calendar_example/presentation/pages/calendar_events.dart:140:32)
I/flutter ( 8701): <asynchronous suspension>
I/flutter ( 8701): 

will skip other info becuz can't get it from the current example app too