6.1 Completed and tested via Postman

src/main/java/io/zipcoder/tc_spring_poll_application/error/ErrorDetail.java → src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ErrorDetail.java

-package io.zipcoder.tc_spring_poll_application.error;
+package io.zipcoder.tc_spring_poll_application.dtos.error;
 
 import java.util.List;
 import java.util.Map;

src/main/java/io/zipcoder/tc_spring_poll_application/error/ValidationError.java → src/main/java/io/zipcoder/tc_spring_poll_application/dtos/error/ValidationError.java

-package io.zipcoder.tc_spring_poll_application.error;
+package io.zipcoder.tc_spring_poll_application.dtos.error;
 
 public class ValidationError {
 

src/main/java/io/zipcoder/tc_spring_poll_application/exception/RestExceptionHandler.java

 package io.zipcoder.tc_spring_poll_application.exception;
 
-import io.zipcoder.tc_spring_poll_application.error.ErrorDetail;
-import io.zipcoder.tc_spring_poll_application.error.ValidationError;
+import io.zipcoder.tc_spring_poll_application.dtos.error.ErrorDetail;
+import io.zipcoder.tc_spring_poll_application.dtos.error.ValidationError;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.MessageSource;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
 import org.springframework.validation.FieldError;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.*;
-import sun.tools.tree.FieldExpression;
 
 import javax.servlet.http.HttpServletRequest;
-import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;