Analysis of http://neos21.hatenablog.com/entry/2017/12/26/080000
Well done! This favicon just looks perfect!
Act now!
Your favicon is not perfect? No problem. As simple as it may sound, favicon is a complex topic with a lot of
untold stories and misleading information.
Maybe this is just a temporary issue, or maybe we just can't process this site.
Anyway we have been notified about this issue and we are going to investigate it.