how fix it?

[Nizika569]

[Error :XUnity.AutoTranslator] Error occurred during translation.
System.ArgumentNullException: String reference not set to an instance of a String.
Parameter name: s
at System.Text.Encoding.GetBytes (System.String s) [0x00012] in <321eb2db7c6d43ea8fc39b54eaca3452>:0
at PapagoTranslate.PapagoTranslateEndpoint.OnCreateRequest (XUnity.AutoTranslator.Plugin.Core.Endpoints.Http.IHttpRequestCreationContext context) [0x000b3] in :0
at XUnity.AutoTranslator.Plugin.Core.Endpoints.Http.HttpEndpoint+d__13.MoveNext () [0x00084] in :0
at XUnity.AutoTranslator.Plugin.Core.Endpoints.TranslationEndpointManager+d__78.MoveNext () [0x000fd] in :0

i need help