Fix stranded inventory - inventory error

Hello.

I’ve got some inventory, which I just sent and it’s showing in stranded inventory - reason “inventory error”. So listing shows “Inactive - out of stock”, but Inventory qty shows as available.
I tried to edit the listing,but there is nothing really to update, everything looks good with description.

today another listing become like this - I do sell this item for ages and there were just 3 items left - why they would appear suddenly as “inventory error”??
Please help.