diff --git a/package.json b/package.json
index 4985ac42d..4daf72d28 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "typescript": "^4.4.3"
   },
   "volta": {
-    "node": "14.18.1"
+    "node": "14.18.1",
+    "yarn": "1.22.19"
   }
 }
diff --git a/packages/readabilityjs/Readability.js b/packages/readabilityjs/Readability.js
index 3d2a2931d..13e1791ad 100644
--- a/packages/readabilityjs/Readability.js
+++ b/packages/readabilityjs/Readability.js
@@ -2235,7 +2235,7 @@ Readability.prototype = {
           if (tweetParent && tweetParent.className.includes('twitter-tweet')) {
             tweetParent.parentNode.replaceChild(tweet, tweetParent);
           }
-        } else if (element.parentNode.className === 'tweet') {
+        } else if (element.parentNode && element.parentNode.className === 'tweet') {
           // Create tweets placeholders from classname
           try {
             const response = await axios.get(link);