Не работают последние две функции в скрипте js

 var audioBtn = document.getElementById('audio_btn');  
var newsBtn = document.getElementById('news_buttn');  
var museumBtn = document.getElementById('museum_buttn'); 
 
var audioBlock = document.querySelector('.audioGid');  
var newsBlock = document.querySelector('.news');  
var museumBlock = document.querySelector('.museumOnline'); 
 
audioBtn.addEventListener('click', audioRules);  
newsBtn.addEventListener('click', n3wsFunc); // Изменено здесь 
museumBtn.addEventListener('click', mus3umFunc); // Изменено здесь 
 
function audioRules(event) {  
    event.preventDefault();   
    console.log('printed');  
    audioBlock.style.display = 'block';  
    newsBlock.style.display = 'none';  
    museumBlock.style.display = 'none';  
};  
 
function n3wsFunc(event) {  
    event.preventDefault();  
    console.log('printed');  
    audioBlock.style.display = 'none';  
    newsBlock.style.display = 'block';  
    museumBlock.style.display = 'none';  
};  
  
function mus3umFunc(event) {  
    event.preventDefault();  
    console.log('printed');  
    audioBlock.style.display = 'none';  
    newsBlock.style.display = 'none';  
    museumBlock.style.display = 'block';  
};