How could fix a bug in your artilce?

[jackchoumine]

Hello I am trying to use LitElement today following your article on

LitElement properties: @property vs @internalProperty

U give a demo but it does not work as your article. I try to fix a bug. but it dose not render table when click a user.

After click fresh button to reload the page, user list and table dont render.

Could u fix it adn tell why ?