ScrollController not attached to any scroll views

I'm using CustomScrollView, and providing it with a controller. ScrollController works, I even added a listener to it and print out the position of the scroll view.

CustomScrollView(
    controller: _scrollController,

Now, all i'm trying to do is jump to position 50.0 inside initState() function.

_scrollController.jumpTo(50.0);

But, i get the error

scrollController not attached to any scroll views

Check if the scrollController is attached to a scroll view by using its hasClients property first.

if (_scrollController.hasClients) 
    _scrollController.jumpTo(50.0);



  // small change using "Recursion"
  void _scrollDown() {
    if (controllerListDay.hasClients) {
      controllerListDay.jumpTo(controllerListDay.position.maxScrollExtent);
      return;
    }

    Future.delayed(Duration(seconds: 1)).then((val) => _scrollDown());
  }

// just call _scrollDown() at any time