This document lists the error codes and corresponding instructions returned by the server and SDK.
description：appId cannot be empty meaning：appId cannot be an empty string
description：SecretKey cannot be empty meaning：SecretKey cannot be an empty string
description：userID cannot be empty meaning：userID cannot be an empty string
description：SDK is not registered, please register meaning：The APP must first call the registration interface to perform other operations.
description：SDK is disabled meaning：The SDK is set to be unavailable, call SDKEnable, it can be used normally.
description：Update information must be current user meaning：Update user information must be current user to see if the user is different
description：No logged in user meaning：The user has not logged in yet, and the login interface is called.
description：no bound wallet meaning：The current user has not yet bound the wallet
description：Extra is empty meaning：Extra cannot be empty
description：Extra is not json meaning：Extra must be in json format
描述：Behavior less than 100 含义：Actiontype must exceed 100
description：Request data exception, protobuf object failed to encode as data meaning：Request data exception, protobuf object failed to encode as data
description：The agreement does not exist meaning：The agreement does not exist
description：Return data error meaning：Return data error
description：Return data parsing error meaning：Return data parsing error
description：Service exception meaning：Service exception
description：The network is successful, but the server return a error. meaning：The network is successful, but the server returned an error
description：In request meaning：Get sdk information request is in progress
description：Error of `URLSession` meaning：Error when connecting to the network
description：Error while creating `URLRequest` from `Request`. meaning：Error while requesting creation
description：Error while creating `Request.Response` from `(Data, URLResponse)`. meaning：Request callback error
description： meaning：RPC request address balance error