JMXMetricsExporter failed in MSK Connect

Hi,

I run this connector via MSK Connect, but receiving the error at this line in the code. Can help to check why it failed?

https://github.com/aws-samples/msk-connect-custom-plugin-jmx/blob/main/custom_module/src/main/java/com/amazonaws/msk/debezium/mysql/JMXMetricsExporter.java#L102

```java
msBehindSource = mxbeanProxy.getMilliSecondsBehindSource();
```

Logs

1723609317000,"[Worker-01ef849f4d1a7f9cf] [2024-08-14 04:21:57,173] INFO [t240814-1215|worker] JMX URL : service:jmx:rmi://localhost/jndi/rmi://localhost:7098/jmxrmi (com.amazonaws.msk.debezium.mysql.connect.JMXMetricsExporter:93)"
1723609317000,"[Worker-01ef849f4d1a7f9cf] [2024-08-14 04:21:57,200] INFO [t240814-1215|worker] Connected to JMX Server Successfully (com.amazonaws.msk.debezium.mysql.connect.JMXMetricsExporter:96)"
1723609317000,"[Worker-01ef849f4d1a7f9cf] [2024-08-14 04:21:57,201] INFO [t240814-1215|worker] Object Name : debezium.mysql:type=connector-metrics,context=streaming,server=mysql (com.amazonaws.msk.debezium.mysql.connect.JMXMetricsExporter:100)"
1723609317000,"[Worker-01ef849f4d1a7f9cf] Exception in thread ""Timer-0"" java.lang.reflect.UndeclaredThrowableException"
1723609317000,[Worker-01ef849f4d1a7f9cf] at com.sun.proxy.$Proxy45.getMilliSecondsBehindSource(Unknown Source)
1723609317000,[Worker-01ef849f4d1a7f9cf] at com.amazonaws.msk.debezium.mysql.connect.JMXMetricsExporter.getMSBehindSourceMetric(JMXMetricsExporter.java:103)
1723609317000,[Worker-01ef849f4d1a7f9cf] at com.amazonaws.msk.debezium.mysql.connect.JMXMetricsExporter.run(JMXMetricsExporter.java:41)
1723609317000,[Worker-01ef849f4d1a7f9cf] at com.amazonaws.msk.debezium.mysql.connect.Scheduler$1.run(Scheduler.java:16)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.util.TimerThread.run(Timer.java:506)
1723609317000,"[Worker-01ef849f4d1a7f9cf] Caused by: javax.management.InstanceNotFoundException: debezium.mysql:type=connector-metrics,context=streaming,server=mysql"
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(DefaultMBeanServerInterceptor.java:1083)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:637)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1443)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1399)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.getAttribute(RMIConnectionImpl.java:637)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.lang.reflect.Method.invoke(Method.java:566)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.security.AccessController.doPrivileged(Native Method)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.security.AccessController.doPrivileged(Native Method)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.base/java.lang.Thread.run(Thread.java:829)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:303)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:279)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:164)
1723609317000,[Worker-01ef849f4d1a7f9cf] at jdk.remoteref/jdk.jmx.remote.internal.rmi.PRef.invoke(Unknown Source)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl_Stub.getAttribute(Unknown Source)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management.rmi/javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.getAttribute(RMIConnector.java:904)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/com.sun.jmx.mbeanserver.MXBeanProxy$GetHandler.invoke(MXBeanProxy.java:122)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:167)
1723609317000,[Worker-01ef849f4d1a7f9cf] at java.management/javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:258)
1723609317000,[Worker-01ef849f4d1a7f9cf] ... 6 more