Error to connect db2/as400

[#1]

I can't connect to db2/as400

I have tried with db2jcc4.jar, db2jcc.jar, jt400.jar

jt400.jar

Error

WARN [Timer-Driven Process Thread-4] o.a.n.controller.tasks.ConnectableTask Administratively Yielding ExecuteSQL[id=3732162d-1fac-1df4-52b9-e9190b60af34] due to uncaught Exception: java.lang.AbstractMethodError: Receiver class com.ibm.as400.access.AS400JDBCConnection does not define or inherit an implementation of the resolved method 'abstract boolean isValid(int)' of interface java.sql.Connection.

[#2]

try with db2jcc4.jar
and the error is:

An attempt was made to access a database, MMSP4LIB, which was either not found or does not support transactions. ERRORCODE=-4499, SQLSTATE=08004); routing to failure: org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException: Cannot create PoolableConnectionFactory ([jcc][t4][2057][11264][4.25.13] The application server rejected establishment of the connection.