Molang's query.get_equipped_item_name could not get the Sea Lantern

When I was writing addons using entity events, I found that Molang's query.get_equipped_item_name could not get the Sea Lantern

Tried query.get_equipped_item_name ('main_hand') == 'sealantern' or 'sea_lantern', 'seaLantern' are invalid