I trying to create a website builder. So for text content editing, I am using contentEditable. So When I Remove all lines at once and save it throws this error sometimes

CodesandBox

How to Recreate:

1. Double click text below Sub heading content
2. remove all text using select all and then click text below it
3. If err does not show just refresh the page and repeat the above steps Expected Result When I Change text content it should update the state variable