Wrong page returned for a hash of invalid length
With a short hash like 55a407f5 ivatar returns an HTML error page stating “incorrect digest length” but with an HTTP code of 200, which is confusing. Latest discussions stated libravatar implementations should do they best to return an image, so perhaps nobody.png should returned here. At least it should be an HTTP code 400 or such.
Example: $ curl -i "https://libravatar-stg.fedorainfracloud.org/avatar/55a407f > HTTP/1.1 200 OK