Flutter “no ScrollPosition attached” SOLVED

════════════ Exception caught by animation library ════════════════
The Scrollbar's ScrollController has no ScrollPosition attached.

The solution to this problem turned out to be, to assign the same scroll controller that I have assigned to the ListView.builder to the Scrollbar !

This problem didn’t exist not long ago, but since the solution is simple, here is a sample code snippet !

So the code to fix was simply this

Widget _buildParticipantDisplay() {
    return Scrollbar(
      interactive: true,
      controller: scrollController,
      child: ListView.builder(
        itemCount: participants.length,
        controller: scrollController,
        itemExtent: 60,
        itemBuilder: (context, index) {
          return ListTile(
            contentPadding: EdgeInsets.symmetric(horizontal: 50),
            title: Text('participant: ${index + 1}'),
            trailing: Text(participants[index]),
          );
        },
      ),
    );
  }