remote testing issue

[nslayer]

Hi,

I have setup the distributed testing structure using the help document. The setup works well when the run the provided jmeter test docker-test.jmx. After that I tried to execute one of my tests, it uses DummySampler from jmeter-plugins-dummy-0.1.jar. I have the jar in ext folder in both master and slave container. but when I run the test I get the NoClassFoundException below,

Creating summariser <summary>
Created the tree successfully using d1.jmx
Configuring remote engine: 172.17.0.2
Starting remote engines
Starting the test @ Sun Nov 01 04:03:37 GMT 2020 (1604203417017)
Error in rconfigure() method java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
        java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
        java.lang.ClassNotFoundException: kg.apc.jmeter.samplers.DummySampler (no security manager: RMI class loader disabled)
Remote engines have been started
Waiting for possible Shutdown/StopTestNow/Heapdump message on port 4445