Error: The property 'field_547_raw' cannot be read because it is undefined

I've been working on code that has been functioning without issue for the past couple of years until recently after a server upgrade. The code is meant to copy student names from a roster to a new date using Visual Studios.

After checking the server logs on AWS, I noticed a multitude of these errors:

  • TypeError: Cannot read property 'field_547_raw' of undefined

I'm wondering if anyone has any insight into why this could be happening. Below is the specific snippet of code causing the problem:

//Transform student names into CSV string
let studentNames = _.reduce(inputs.studentDataList, (accumulator, student) => {
  accumulator.push(student.field_548_raw[0].identifier);
  return accumulator;
}, []).join(', ');

//Retrieve class data and extract the ID and date
let classResponse = await StudentRosterService.getClassFromStudentRosterRecord(inputs.studentDataList[0].id);

try {
  classResponse = JSON.parse(classResponse);
} catch (exception) {
  return exits.unknownError();
}

let classId = classResponse.records[0].field_547_raw[0].id;
let classDate = classResponse.records[0].field_672;

//Update the student name on the class and date on the Student Roster records
let promises = [];
promises.push(ClassService.putStudentNamesOnClass(studentNames, classId, inputs.userId));

_.forEach(inputs.studentDataList, (studentData) => {
  promises.push(StudentRosterService.putClassDateOnStudentRosterRecord(classDate, studentData.id, inputs.userId));
});

Any assistance or insights you can offer would be immensely helpful; feel free to ask any further questions for clarification. Thank you for your time.

Answer №1

The issue arises when the records array at index 0 within classResponse is undefined.

After reviewing the provided code, it is difficult to pinpoint the exact source of the problem. It is advisable to validate whether classResponse holds the correct data.

Furthermore, ensure that

let classResponse = await StudentRosterService.getClassFromStudentRosterRecord(inputs.studentDataList[0].id);
is placed within the try block in order to handle any potential promise rejection.

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