404 for two emojis

[Grzegorz.Janoszka]

My site with latest Wordpress 4.7.3 has the following errors:

The following requests are returning 404/410 responses. Either fix the broken links, or remove the references to the non-existent resources.

​https://twemoji.maxcdn.com/2/1f641.svg
​https://twemoji.maxcdn.com/2/1f642.svg

These errors come from /wp-includes/js/wp-emoji-release.min.js

[ocean90]

Hello @Grzegorz.Janoszka, thanks for your report!

Are you using a plugin (or theme) which changes the CDN for the Emoji by any chance? The default CDN is ​https://s.w.org/ which has both images, see ​https://s.w.org/images/core/emoji/2.2.1/svg/1f641.svg and ​https://s.w.org/images/core/emoji/2.2.1/svg/1f642.svg.

[Grzegorz.Janoszka]

I don't have any plugin that could affect emojis. Please note that in /wp-includes/js/wp-emoji-release.min.js I see the following:

var p={base:"https://twemoji.maxcdn.com/2/",ext:".png",size:"72x72",className:"emoji",

and so on. Not sure why the JS would select maxcdn over s.w.org.

[UPDATE]
I actually dug into that and I found one plugin that was meant to speed up the website had a code:

  # remove <link rel='dns-prefetch' href='//s.w.org' /> from the head:
  add_filter('emoji_svg_url','__return_false');

Could it be that it actually changes the CDN from s.w.org to maxcdn? And if yes - there seems to be some replication issues as some files are missing.

[ocean90]

Could it be that it actually changes the CDN from s.w.org to maxcdn?

That's right. In this case I suggest creating an issue on their repo: ​https://github.com/twitter/twemoji

[SergeyBiryukov]

Replying to Grzegorz.Janoszka:

Please note that in /wp-includes/js/wp-emoji-release.min.js I see the following:

var p={base:"https://twemoji.maxcdn.com/2/",ext:".png",size:"72x72",className:"emoji",

Right, that's the default value, but it's only used if no other value is specified via settings.svgUrl​. WordPress does specify its own svgUrl value​.

I actually dug into that and I found one plugin that was meant to speed up the website had a code:

  # remove <link rel='dns-prefetch' href='//s.w.org' /> from the head:
  add_filter('emoji_svg_url','__return_false');

Could it be that it actually changes the CDN from s.w.org to maxcdn?

Yes, that's exactly what it does. If the goal is just to remove the dns-prefetch resource hint, ​wp_resource_hints filter should have been used for that.

And if yes - there seems to be some replication issues as some files are missing.

For reference, the missing files are:

• slightly frowning face: ​http://www.fileformat.info/info/unicode/char/1f641/index.htm
• slightly smiling face: ​http://www.fileformat.info/info/unicode/char/1f642/index.htm