...
In some cases your website does not require a logo and you just want the errors to stop showing up.
If you want to create you own custom logo consider using Dynamic Drive's favicon.ico generator or reading articles like Pixel Art's Create a Better Favicon For Your Website.
0 Byte favicon.ico
In this case you can download my 0 byte favicon.ico and place it in the /var/www folder or you can create your own using the touch command,
...