::prepare_items() should be compatible with WP_List_Table::prepare_items()

Hi !

I need help with a plugin I’m developing. In admin plugin page i have this
Strict Standards: Declaration of Lkreservation\TransferReservation::prepare_items() should be compatible with WP_List_Table::prepare_items() in /home/alpsairp/www/dev_lk/wp-content/plugins/lk-reservation/lkreservation/TransferReservation.php on line 417

Here is my function who’s calling prepare_items :

	public function prepare_items($type) {
		
		$columns 	= $this->get_columns();
		$sortable 	= $this->get_sortable_columns();
		$hidden 	= ['nb_reservation'];

		$this->_column_headers = [
			$columns, $hidden, $sortable
		];

		/** Process bulk action */
		$this->process_bulk_action();

		$per_page = $this->get_items_per_page('checkout_per_page', 10);
		$current_page = $this->get_pagenum();
		$total_items = self::record_count();

		$this->set_pagination_args([
			'total_items' => $total_items, //WE have to calculate the total number of items
			'per_page' => $per_page //WE have to determine how many items to show on a page
		]);

		$this->items = self::get_checkout($per_page, $current_page, $type);
	}

get_checkout is a simple function running an sql call and return an array.

Can you help me with this ?
Thanks