TypeError: null is not an object (evaluating 'n.parentNode.replaceChild')

https://sentry.gitlap.com/gitlab/frontend-staging/issues/184328/

TypeError: null is not an object (evaluating 'n.parentNode.replaceChild')
  at None (/_s/25ece92/js/router-chat.js:1:609806)
  at None (/_s/25ece92/js/router-chat.js:1:610007)
  at a (/_s/25ece92/js/vendor.js:1:141036)
  at _settlePromiseFromHandler (/_s/25ece92/js/vendor.js:1:135319)
  at _settlePromise (/_s/25ece92/js/vendor.js:1:136140)
...
(5 additional frame(s) were not displayed)

This occurs in the Safari-backed macOS desktop app