Ultimate Branding on a local Mac Dev Environment throws error

I get this error below logged in as admin in my firefox console. What do I need to do? I'm on a MacBook Pro running MAMP, Wordpress 4.7.4. I've XXXXX out my site folder name. I'm running under gulp control for all three browsers (Safari, Firefox, Chrome)

downloadable font: OS/2: bad linegap: -64 (font-family: "icomoon" style:normal weight:normal stretch:normal src index:1) source: http://192.168.1.70:8890/XXXXXX/wp-content/plugins/ultimate-branding/ultimate-branding-files/css/fonts/icomoon.ttf admin-icon.css:1:12