Doesn't work with WEB project - MissingPluginException

[ajeets1978]

errors.dart:187 Uncaught (in promise) Error: MissingPluginException(No implementation found for method getProperties on channel fk_user_agent)
at Object.throw_ [as throw] (errors.dart:236)
at MethodChannel._invokeMethod (platform_channel.dart:156)
at _invokeMethod.next ()
at async_patch.dart:45
at _RootZone.runUnary (zone.dart:1613)
at _FutureListener.thenAwait.handleValue (future_impl.dart:155)
at handleValueCallback (future_impl.dart:707)
at Function._propagateToListeners (future_impl.dart:736)
at _Future.new.[_completeWithValue] (future_impl.dart:542)
at async._AsyncCallbackEntry.new.callback (future_impl.dart:580)
at Object._microtaskLoop (schedule_microtask.dart:40)
at _startMicrotaskLoop (schedule_microtask.dart:49)
at async_patch.dart:166