Been searching for the cause of this error:
https://YOURDOMAIN.duckdns.org:8123/frontend_latest/eb618cf11a4eca6918ea.chunk.js:266:702 TypeError: this.shadowRoot.querySelector(...) is null
After making the switch to Lovelace, error log was flooding with these errors.
Always the same.
Then i noticed it only writes to the error log (little notification lower left corner) when selecting certain tabs. In my case ‘Lights’ ‘Media’ ‘Music’.
Began to rebuild the UI for the Tab, and turnes out Lovelace gave the error when there is a input_number defined on the selected page.
Not sure why Lovelace can’t handle / stand the input_number though
Anyone familiar with this error? Is there a work around?