When you use two other slider widgets and you want to synchronize them.

If the items are selected. And you want to change one item. You will probably encounter this error.

So the solution is:

Suppose we have a student class. So we have 3 widgets that have the name. Height. Weight of each person and these are related to each other.

Now I enter the name for example Michael. And then the height and weight are loaded in the next widgets.

Now I am going to change the name. This is where I must make sure to empty the height and weight items before changing. So that I do not get an error.