request url /2023-01/labels

request data

{"easyship_shipment_id":"ESHU200887484","courier_id":"ccbb399c-09fb-46db-9e35-14fed4b11a55"}

responce

{"error":{"code":"invalid_content","details":["undefined method `map' for nil:NilClass"],"message":"The request body content is not valid.","request_id":"fbaaff4614fa21de28680391d88ef573","type":"invalid_request_error"}}

Tell me what's wrong with the request?