SEVER input type not supported:: class com.orientechnologies.orient.core.sql.query.OBasicLegacyResultSet [OETLOrientDBLoader]

Hi all,

I got the prompt that “SEVER input type not supported:: class com.orientechnologies.orient.core.sql.query.OBasicLegacyResultSet [OETLOrientDBLoader]” when creating edge using the Command Transformer of the ETL module, and found that it hasn’t created any edges finally.
So what did it mean? And how can I solve the problem? The version of orientdb is 3.0.18.