Unmounted Component Error.

We upgraded to:
"react": "^16.8.6",
"react-dom": "^16.8.6",
"react-visibility-sensor": "5.0.2",

We load a component that renders the VisibilitySensor component. It's mounted when a button is clicked (its a pop up basically). When it mounts the component logs an error to the console. The visibility change no longer fires. I tried active={false} to see if that would help but it does not.

The console error is:

react-dom.development.js:55 Uncaught Invariant Violation: Unable to find node on an unmounted component.
at invariant (http://local.pac-12.com/profiles/pac12/modules/modules/pac12_react/modules/pac12_react_schedule/dist/schedule.js?pqf8zw:27295:15)
at findHostInstanceWithWarning (http://local.pac-12.com/profiles/pac12/modules/modules/pac12_react/modules/pac12_react_schedule/dist/schedule.js?pqf8zw:47864:9)
at Object.findDOMNode (http://local.pac-12.com/profiles/pac12/modules/modules/pac12_react/modules/pac12_react_schedule/dist/schedule.js?pqf8zw:48378:14)
at VisibilitySensor.componentDidMount (http://local.pac-12.com/profiles/pac12/modules/modules/pac12_react/modules/pac12_react_schedule/dist/schedule.js?pqf8zw:52660:38)
at e.notifyAll (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:12:7904)
at r.close (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:14:18388)
at r.closeAll (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:15:9758)
at r.perform (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:15:9253)
at o.perform (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:15:9170)
at o.perform (http://local.pac-12.com/sites/all/libraries/react-dom/react-dom.min.js?pqf8zw:14:24725)