Pagesense snippet required updating

Pagesense snippet required updating


My pagesense snippet.js is flagging a warning in:
  1. Browser console logging
  2. PageSpeed Insights test
Error message as follows:
DOM Mutation Events, including `DOMSubtreeModified`, `DOMNodeInserted`, `DOMNodeRemoved`, `DOMNodeRemovedFromDocument`, `DOMNodeInsertedIntoDocument`, and `DOMCharacterDataModified` are deprecated ( and will be removed. Please use `MutationObserver` instead.

Use of Mutation Events is deprecated. Use MutationObserver instead.

URL to my website: 

Can you please advise if I need to do anything from my end? 

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