Cannot instantiate multiple objects in for loop - node.js - node.js

Question

I am using node.js and n-api. The gist of it is that I cannot create a new object within a for loop without getting a type error that says:
TypeError: wrappedExamData.getPatientID is not a function
This only occurs when trying to create an object the second time. The first time works fine, though. If I create multiple new objects outside of the for loop, it works fine as well.
Here is the module that is throwing the error
//Require the node module
const nodeModule = require('../../../build/Release/QTWebUI.node');
//Require the Exam Class
const Exam = require('./Exam.js');
exports.retrieveAllExams = function(){
// Create a js wrapped c++ class to get a list of exam IDs
var msgGetExamList = new nodeModule.EMGetExamList_Wrapped();
// Create an array of the examIDs
var examList = msgGetExamList.getExamIDs();
console.log(examList);
var examArray = new Array();
for(let i = 0; i < examList.length; i++){
// Create a js wrapped c++ class to send get exam to scanner
var msgGetExam = new nodeModule.EMGetExam_Wrapped(examList[i]);
// Get the js wrapped examData from the c++ class
var wrappedExamData = msgGetExam.getWrappedExamData();
// Create a new exam object with the wrapped examData
var exam = new Exam(wrappedExamData);
// Print the newly created exam object
console.log("Exam: %s", JSON.stringify(exam));
// Push to array
examArray.push(exam);
}
return examArray;
};
Here is the Exam class that I am using where the error is traced back:
module.exports = internal.Exam = class{
constructor(wrappedExamData){
this.patientID = wrappedExamData.getPatientID();
this.firstName = wrappedExamData.getFirstName();
this.lastName = wrappedExamData.getLastName();
this.middleName = wrappedExamData.getMiddleName();
this.gender = wrappedExamData.getGender();
this.birthDate = wrappedExamData.getBirthDate();
this.scanTime = wrappedExamData.getScanTime();
this.description = wrappedExamData.getDescription();
this.breast = wrappedExamData.getBreast();
this.accession = wrappedExamData.getAccession();
this.operatorsName = wrappedExamData.getOperatorsName();
this.examState = wrappedExamData.getExamState();
this.progress = wrappedExamData.getProgress();
this.archiveMultiplicity = wrappedExamData.getArchiveMultiplicity();
this.density = wrappedExamData.getDensity();
this.targetType = wrappedExamData.getTargetType();
this.fromMWL = wrappedExamData.getFromMWL();
}
}
If I instantiate the objects like this:
// Create a js wrapped c++ class to send get exam to scanner
var msgGetExam = new nodeModule.EMGetExam_Wrapped(examList[0]);
// Get the js wrapped examData from the c++ class
var wrappedExamData = msgGetExam.getWrappedExamData();
// Create a new exam object with the wrapped examData
var exam = new Exam(wrappedExamData);
// Print the newly created exam object
console.log("Exam: %s", JSON.stringify(exam));
// Push to array
examArray.push(exam);
// Create a js wrapped c++ class to send get exam to scanner
var msgGetExam1 = new nodeModule.EMGetExam_Wrapped(examList[1]);
// Get the js wrapped examData from the c++ class
var wrappedExamData1 = msgGetExam1.getWrappedExamData();
// Create a new exam object with the wrapped examData
var exam1 = new Exam(wrappedExamData1);
// Print the newly created exam object
console.log("Exam: %s", JSON.stringify(exam1));
// Push to array
examArray.push(exam1);
It works fine. Is there something I'm missing here?