Please help me fix this error

I try the emulator, and everything still works till I want to remove layout tittle in the list (I use layout for virtual screen).
I attached the block image
and here is the error
Remove list item: Attempt to remove item 0 of the list [,,]. The minimum valid item number is 1.

Can you help me fix it?
Many thanks.

Please download and post each of those event block(s)/procedures here ...
(sample video)

You are not taking into account that the indexes of items in list collapse after you remove items from that list.
After you remove item 2 from a list with 3 items, there will no longer be an item 3, because it fell into slot 2.