Top "Polymer-3.x" questions

Relative references must start with either "/", "./", or "../"

I am newbie to lit-element, and when use import to include the library, I am getting error as: Uncaught TypeError: …

javascript lit-element polymer-3.x lit-html

Uncaught DOMException: Failed to execute 'define' on 'CustomElementRegistry': this name has already been used with this registry

Uncaught DOMException: Failed to execute 'define' on 'CustomElementRegistry': this name has already been used with this registry at http://127.0.0.1:8000/components/@…

polymer web-component custom-element polymer-3.x