Failed to read value from property in Java

Question

de.danielbechler.diff.introspection.PropertyReadException: Failed to read value from property 'areaCode' of type 'com.abhishekpandey.jsonWriterReader.domain.FundRequest$HibernateProxy$bwLejRpl'

There are 2 objects which I am trying to compare.

1. mappedObject is the request from the API (Values are below in the image)
2. previousObject is the Data fetched from the DB with the ID from the API Request mapped Object

This is how I am mapping my request to the FundRequest.Class

final List<U> mappedRequests = requestToEntityMapper.map(requests, FundRequest); --> Calling this from another method which invokes the below Function to map

private static final Function<FundRequest, FundRequest> newRequestMapper = 
request ->
        NewFundRequest.builder()
                .descriptorCode(request.getDescriptorCode())
                .areaCode(request.getAreaCode())
                .accountingCode(request.getAccountingCode())
                .fundCode(request.getFundCode())
                .loadStatusCode(request.getLoadStatusCode())
                .userId(request.getUserId())
                .createdAt(request.getCreatedAt())
                .lastUpdated(request.getLastUpdated())
                .build();

My FundRequest.Class

package com.abhishekpandey.jsonWriterReader.domain;

import java.sql.Timestamp;

import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.Entity;
import org.springframework.util.StringUtils;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;


@Data
@Entity
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Table(name="FUND_REQUEST", schema="MYFUNDDB")
public class FundRequest implements Storable {

@Id
@Column(name = "DESC_CD")
private String descriptorCode;

@Column(name = "AREA_CD")
private String areaCode = "A";

@Column(name= "ACCT_CD")
private String accountingCode = StringUtils.EMPTY;

@Column(name = "FUND_CD")
private String fundCode = StringUtils.EMPTY;

@Column(name = "LOAD_STAT_C")
private Short loadStatusCode = 1;

@Column(name = "USER_I")
private String userId;

@Column(name = "MOD_TS")
public Timestamp lastUpdated;

@Column(name = "CREATION_TS")
public Timestamp createdAt;

@Override
public String getKey() {
    return String.valueOf(descriptorCode);
}
}

This is how I am getting my previousObject and then passing both objects to another method where it will find and returns the changes

Storable previousObject = null;

try {
     previousObject = repository.getById(mappedObject.getKey()); 
} catch (Exception e) {
    System.out.println("error: " + e);
}

List<AuditChange> changes = findChangesInObject(previousObject, mappedObject);

I am using ObjectDifferBuilder in my findChangesInObject() then it throws PropertyReadException exception for areaCode, as it is not able to access the property.

private List<AuditChange> findChangesInObject(final Storable previousObject, final Storable mappedObject) {

List<AuditChange> objectChanges = new ArrayList<>();

DiffNode diff = null;
try {
         diff = ObjectDifferBuilder.buildDefault().compare(previousObject, mappedObject);
}  catch (Exception exception) {
   // Catch unexpected Exceptions.
   exception.getStackTrace();
   
   if (exception.getCause() != null) {
       exception.getCause();
   }
    }


diff.visit((diffNode, visit) -> {
    AuditChange change = AuditChange.builder().fieldName(diffNode.getPropertyName())
            .previousValue(String.valueOf(diffNode.canonicalGet(previousObject)).trim())
            .currentValue(String.valueOf(diffNode.canonicalGet(mappedObject)).trim()).build();
    objectChanges.add(change);
    });
return objectChanges;
}

I am getting PropertyReadException --> InvocationTargetException --> EntityNotFoundException

I am sharing the images from the variables which has exceptions and values for previous & mapped objects.

Also I get this InvocationExcption when I try to see the values of the previousObject in Debug Mode.

I tried to figure out and found this article, where it talks about issues of using Lombok and Hibernate annotations together and tried removing the @Data and using @Getter, @Setter but still the issue remains. I am blocked on this from past 3 days and not able to find any solution.