"inaccessible due to its protection level" error but can't figure out why?

Unity Engine
1

I haven’t used Unity in a few years and am getting error CS0122: ‘QuizUI.SetQuestion(Question)’ is inaccessible due to its protection level.

I’m following a tutorial and as far as I can tell, my code is exactly the same as his. Can anyone help me figure out what I’m doing wrong? 20:41 into this video.

Here’s my code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class QuizManager : MonoBehaviour
{
[SerializeField] private QuizUI quizUI;
[SerializeField]
private List<Question> questions;

private Question selectedQuestion;

// Start is called before the first frame update
void Start()
{
SelectQuestion();
}

void SelectQuestion()
{
int val = Random.Range(0, questions.Count);
selectedQuestion = questions[val];

quizUI.SetQuestion(selectedQuestion); //This is the line with the error
}
2

You better use code tags, there is an option “Insert Code” in formatting menu.
Your SetQuestion() method probably have “private” access modifier. Change it to “public”.
It should be:

public void SetQuestion(Question question)
{
    //...
}
3

Thank you so much, both for the insert code tip and the help.