Execute the build script to generate error pages. Before that, build a fresh version of nfdi-webcomponents.js to get the latest version of the nfdi-navbar.
cd dataplant-keycloak-theme/navbar-building
npm install
rollup --config rollup.config.js cp dst/nfdi-webcomponents.js ../dataplant-card-theme/login/resources/js/
To generate status pages add details for each HTTP status code to codes.json