테마업데이트 후 댓글이 사라짐.
수정 파일 :  comments.php 에 아래 코드 삽입
테마 업데이트 시 파일 위치와 ,  소스코드를 잃어버리지 않기 위해서.. 남겨놓음.

<div id="disqus_thread"></div>
<script>
    /**
     *  RECOMMENDED CONFIGURATION VARIABLES: EDIT AND UNCOMMENT 
     *  THE SECTION BELOW TO INSERT DYNAMIC VALUES FROM YOUR 
     *  PLATFORM OR CMS.
     *  
     *  LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: 
     *  https://disqus.com/admin/universalcode/#configuration-variables
     */
    /*
    var disqus_config = function () {
        // Replace PAGE_URL with your page's canonical URL variable
        this.page.url = PAGE_URL;  
        
        // Replace PAGE_IDENTIFIER with your page's unique identifier variable
        this.page.identifier = PAGE_IDENTIFIER; 
    };
    */
    
    (function() {  // REQUIRED CONFIGURATION VARIABLE: EDIT THE SHORTNAME BELOW
        var d = document, s = d.createElement('script');
        
        // IMPORTANT: Replace EXAMPLE with your forum shortname!
        s.src = 'https://EXAMPLE.disqus.com/embed.js';
        
        s.setAttribute('data-timestamp', +new Date());
        (d.head || d.body).appendChild(s);
    })();
</script>
<noscript>
    Please enable JavaScript to view the 
    <a href="https://disqus.com/?ref_noscript" rel="nofollow">
        comments powered by Disqus.
    </a>
</noscript>

출처 :
https://help.disqus.com/installation/universal-embed-code
https://www.freakyjolly.com/how-to-set-disqus-configuration-variables/