Flutter Unable to delete last item in AnimateList - flutter

Question

I am trying to create a todo list with AnimatedList. I am able to add new todos but am unable to delete them without having any error. My problem here is that whenever I delete the last todo, this error shows up: Another exception was thrown: RangeError (index): Invalid value: Valid value range is empty: 0.
This is the code for my delete todo
// delete goal
void deleteGoal(int index) {
if (db.dailyList.isEmpty) {
return;
}
_listKey.currentState!.removeItem(index, (context, animation) {
return FadeTransition(
opacity: animation,
child: Tile(
title: db.dailyList[index][0],
goalAchieved: db.dailyList[index][1],
onChanged: (value) =>
{checkBoxChanged(value, index), achievedGoal(index)},
deleteFunction: (context) => deleteGoal(index),
),
);
});
setState(() {
db.dailyList.removeAt(index);
for (int i = index; i < db.dailyList.length; i++) {
db.dailyList[i][2] = i;
}
});
db.updateDatabase();
}

Answer 1

Assume that the list has n items. you are deleting last item, and the index is n-1 (because list indexing starts from zero). When you delete last item, index is still remaining n-1. In the last for loop, you are trying to iterate the list from n-1, but the currect value should be n-2 (because one item is deleted and the list size decreased).
Conclusion: db.dailyList.removeAt(index) >> for (int i = index; ... >> db.dailyList[i] makes error