Hello, I want to customize the nuxeo-object-diff component. So I create a new component and I copy the code from https://github.com/nuxeo/nuxeo-web-ui/blob/maintenance-3.1.x/elements/diff/nuxeo-object-diff.js . However, when I deployed the code, I encountered this error: (Uncaught TypeError: Failed to resolve module specifier “@polymer/polymer/lib/legacy/polymer-fn.js”. Relative references must start with either “/“, “./“, or “../“)

Any idea?