favicon.ico “not found error” in App Engine

Question

I am trying to develop on Google App Engine and in the list of the errors displayed in the admin console I always see the following:

/favicon.ico

Answer 1

I am using this snippet in a GAE app configuration:

handlers:

  - url: /(.*\.(ico|png|webmanifest))$
    static_files: faviconfiles/\1
    upload: faviconfiles/.*\.(ico|png|webmanifest)$

I then put the corresponding set of files (these days if you seriously want to set a "favicon" it's a set of files incl. e.g. apple-touch-icon.png) into the ./faviconfiles directory next to my app.yaml.