From 835a553bf93862e616f20333d2bfe98c689d655c Mon Sep 17 00:00:00 2001
From: ghalestrilo <ghalestrilo@gmail.com>
Date: Fri, 3 Jul 2020 14:40:20 -0300
Subject: [PATCH] :bug: <PreviewFrame /> check for own iframe body tag before
 unmounting it

---
 client/modules/IDE/components/PreviewFrame.jsx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/client/modules/IDE/components/PreviewFrame.jsx b/client/modules/IDE/components/PreviewFrame.jsx
index 3b193a8f..ef33bb3f 100644
--- a/client/modules/IDE/components/PreviewFrame.jsx
+++ b/client/modules/IDE/components/PreviewFrame.jsx
@@ -64,7 +64,8 @@ class PreviewFrame extends React.Component {
 
   componentWillUnmount() {
     window.removeEventListener('message', this.handleConsoleEvent);
-    ReactDOM.unmountComponentAtNode(this.iframeElement.contentDocument.body);
+    const iframeBody = this.iframeElement.contentDocument.body;
+    if (iframeBody) { ReactDOM.unmountComponentAtNode(iframeBody); }
   }
 
   handleConsoleEvent(messageEvent) {