Converting Request scoped bean to JSON string

I was facing an issue while converting a bean with request scope to JSON using object mapper. It thows an exception like below. Not sure what am missing. I couldn't find any relatable resource on the web. Can someone explain what should be the way to do this.

Thanks in advance.

Line of code :

planInfo -> Bean with request scope

String json = new ObjectMapper().writeValueAsString(planInfo);

Exception :

"timestampSeconds":1630567890,"timestampNanos":683000000,"severity":"ERROR","thread":"qtp133294616-216","logger":"com.signup.api.service.SignupService","message":"exception \ncom.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: jdk.internal.loader.ClassLoaders$PlatformClassLoader[\"unnamedModule\"]-\u003ejava.lang.Module[\"classLoader\"]-....

PlanInfo

import lombok.Data;
import org.springframework.stereotype.Component;
import org.springframework.web.context.annotation.RequestScope;

@Data
@Component
@RequestScope
public class PlanInfo {
  String additionalPlanDetails;
  String additionalServiceCost;
  String listOfAdditionalServiceIds;

  String planMinutes;
  String planPrice;
  String totalamt;

  String setUpFee;
  String selectedPlanId;
  String canadaProvince;

  String vatAmount;
  String vatPercentage;
  String netTotalAmt;

  String selectedIvrPlanId;
  String selectedIvrPlanMinutes;
  String selectedIvrPlanPrice;

  String totalPlanPrice;
  String totalAmtAfterDiscount;
  boolean waiveSetupFee;
  String planCategory;
}