Flutter 2.8.1 - ScrollController not attached to any scroll views error

[aytunch]

[VERBOSE-2:ui_dart_state.cc(209)] Unhandled Exception: 'package:flutter/src/widgets/scroll_controller.dart': Failed assertion: line 170 pos 12: '_positions.isNotEmpty': ScrollController not attached to any scroll views.
#0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:47:61)
#1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2 ScrollController.jumpTo
package:flutter/…/widgets/scroll_controller.dart:170
#3 _MarqueeState.initState.
package:marquee/marquee.dart:548
#4 _MarqueeState.initState.
package:marquee/marquee.dart:545
#5 SchedulerBinding._invokeFrameCallback
package:flutter/…/scheduler/binding.dart:1145

[danielkohl]

+1

[SergeyShustikov]

Fixed by rewrtining initState method

 WidgetsBinding.instance?.addPostFrameCallback((_) async {
      if (!_running) {
        _running = true;
        if (_controller.hasClients) {
          _controller.jumpTo(_startPosition);
          await Future<void>.delayed(widget.startAfter);
          Future.doWhile(_scroll);
        }
      }
    });

[aytunch]

@SergeyShustikov @MarcelGarus Can we merge this fix to the package?

[MarcelGarus]

I merged this; it's published in version 2.2.1.