The file “undefined-outline.svg” couldn’t be opened because there is no such file

[Shawn Nolan]

I'm seeing an issue of Unhandled Promise rejection: The file “undefined-outline.svg” couldn’t be opened because there is no such file. ; Zone: <root> ; Task: Promise.then ; Value: {} undefined

Also, there doesn't seem to be a file necessary for ~@mapbox/mapbox-gl-geocoder/lib/mapbox-gl-geocoder.css when trying to import it in the css file.