Fix for previous release v1.2. Still missed one additional instantiation of MessageHandler in V2GCommuicationSessionHandlerSECC that needs to be removed.

RISE-V2G-SECC/src/main/java/com/v2gclarity/risev2g/secc/session/V2GCommunicationSessionHandlerSECC.java

@@ -72,7 +72,7 @@ public class V2GCommunicationSessionHandlerSECC implements Observer {
 		// Maps ConnectionHandlers to their respective running threads
 		setConnectionHandlerMap(new HashMap<ConnectionHandler, Thread>());
 		
-		setMessageHandler(new MessageHandler());
+		setMessageHandler(MessageHandler.getInstance());
 	}
 
 	@Override