Cannot read property 'querySelectorAll' of undefined (0.98.4)

I’m seeing this error message in the log of each of my HA instances:

https://volumio:8123/developer-tools/info:1:89 Uncaught TypeError: Cannot read property ‘querySelectorAll’ of undefined

Where does this come from?
Known issue?

I’m using HA 0.98.4.


Ever resolve this? For me it started because of zwavegraph2 panel being added. Chances are something installed causing it. Is info the end of the URL? For me it was zwavegraph2 so assume “info” is causing it.