I deploy a contract on sdk-testnet.aepp.com, and i use javascript api call it, it happend an error,
Error: While calling postTransaction (body), POST to https://sdk-testnet.aepps.com/v2/transactions failed with 400: Invalid tx
at createError (createError.js?2d83:16)
at settle (settle.js?467f:18)
at XMLHttpRequest.handleLoad (xhr.js?b50d:77)