Drill in Nifi (DBCPConnectionPool 1.5.0) error failed to process session due to java.lang.RuntimeException

[#1]

Hi,

I am trying to connect Apache Drill 1.13.0 from Apache NiFi 1.5.0 by DBCPConnectionPool 1.5.0

but I got error

06:17:54 UTC

ERROR

eec752d9-0163-1000-0000-0000293632ce

%%%%%

ExecuteSQL[id=eec752d9-0163-1000-0000-0000293632ce] ExecuteSQL[id=eec752d9-0163-1000-0000-0000293632ce] failed to process session due to java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class ${package.namespace.prefix}null not found: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class ${package.namespace.prefix}null not found

06:17:54 UTC

WARNING

eec752d9-0163-1000-0000-0000293632ce

%%%%

ExecuteSQL[id=eec752d9-0163-1000-0000-0000293632ce] Processor Administratively Yielded for 1 sec due to processing failure

Thanks in advance,

Tom

[#2]

I don't know, I am newbie

How to check ?