Add Column with int of number index position. Trying to get property 'orderable' of non-object

[jakarin-khiewcharoen]

this error because in file DataTableColumnDefs.php function add()
this code array_splice( $this->columns, $position, 0, $column).
It makes data of $this->columns can't use .
me fix it by array_splice( $this->columns, $position, 0, array($column)); let it work.