ENGINE-08028 Exception while invoking @PostDeploy on Process Application Loan Approval App

Hi,
I am getting following error while calling the CamelContext, CamelContext context = new DefaultCamelContext(jndiContext);

org.camunda.bpm.engine.ProcessEngineException: ENGINE-08043 Exception while performing ‘Deployment of Process Application Loan Approval App’ => ‘Invoking @PostDeploy’: ENGINE-08028 Exception while invoking @PostDeploy on Process Application Loan Approval App: null

I am facing this issue while upgrading from 7.3 to 7.4. I have followed all upgrade steps https://docs.camunda.org/manual/7.7/update/minor/73-to-74/

@ProcessApplication(“Loan Approval App”)
public class LoanApprovalApplication extends ServletProcessApplication {
public static Logger logger = Logger.getLogger(LoanApprovalApplication.class);
// empty implementation
@PostDeploy
public void start(ProcessEngine processEngine) throws SHGException {
logger.info(“Inside Loan Approval Application Process Engine Start”);
MQReader mqRead = new MQReader(processEngine);
try {
JndiContext jndiContext = new JndiContext();
jndiContext.bind(“myReader”, mqRead);

  	CamelContext context = new DefaultCamelContext(jndiContext);

   } catch (Exception e) {
  	 logger.error("Logger"+e.getMessage());
       
   }
}

}

What will be the reason behind this issue?