components/comments/index.js

@@ -22,7 +22,8 @@ const DisqusComponent = dynamic(
 
 const Comments = ({ frontMatter }) => {
   let term
-  if (!siteMetadata.comment) return <></>
+  const comment = siteMetadata?.comment
+  if (!comment || Object.keys(comment).length === 0) return <></>
   switch (
     siteMetadata.comment.giscusConfig.mapping ||
     siteMetadata.comment.utterancesConfig.issueTerm