| ERROR | element at index [string] has been previously deleted |
| CAUSE | Trying to delete a non-existent collection element. |
| ACTION | Check for the existence of the element prior to calling this function. |
| ERROR | element at index [string] has been previously deleted |
| CAUSE | Trying to delete a non-existent collection element. |
| ACTION | Check for the existence of the element prior to calling this function. |