The following error appears on a local build of the current master branch (385e3580) when requesting http://localhost:8080/exist/apps/tei-publisher/index.html:

GET http://localhost:8080/exist/apps/tei-publisher/components/bower_components/animejs/lib/anime.min.js net::ERR_ABORTED 404 (Document /db/apps/tei-publisher/components/bower_components/animejs/lib/anime.min.js not found)

This also appears when loading a generated app's homepage, e.g.:

GET http://localhost:8080/exist/apps/frus-unbound/components/bower_components/animejs/lib/anime.min.js net::ERR_ABORTED 404 (Document /db/apps/tei-publisher/components/bower_components/animejs/lib/anime.min.js not found)

This anime.min.js resource is loaded when index.html loads https://gitlab.existsolutions.com/tei-publisher/tei-publisher-app/blob/master/components/dependencies-dev.html#L67.