I occasionally see 404 Not Founds in our logs on the DejaVu fonts. I see they were added in Q3 2014 for PDFs but I am not using PDF exports. I do not have the fonts in the css/fonts folder since I did not think I needed them. The page does have a grid control.
Any idea on why these are being requested? I can't reproduce this so can't see the source to debug it. Of course one solution is to add the fonts to the project.
Thanks