When I call the List Product API, I get the following error: "Input error" This error usually appears with the line with a problem. Please revise the respective line in the json body. Related articles Error message 'There is an error in the input value. line:1' is displayed. How do I fix this? Coupang OPEN API What should I do when a 521 error is returned? How to Submit an API Related Online Inquiry Courier Code