Script '%1' returns a '%2' object, but only return types of 'System.Void' and 'System.String' are supported

Error code –10173
Error constant EL_DNET_INVALID_RETURN_TYPE
Parameter 1 The method name.
Parameter 2 The returned object type.
Probable cause

The method is declared to return a type that is unexpected. Change your method to return the correct type.