ShipScript has been an eBay Community volunteer since 2003, specializing in HTML, CSS, Scripts, Photos, Active Content, Technical Solutions, and online Seller Tools.
If you are unable to ship an item that you sold, you will need to cancel the transaction. You'll get a defect for canceling, but if it's the only one this year, it should not be too bad.
https://www.ebay.com/help/selling/getting-paid/sellers-can-cancel-order?id=4136
