fonts/glyphicons-halflings-regular.woff2 404 error
wget https://github.com/metaskills/less-rails-bootstrap/raw/master/app/assets/fonts/twitter/bootstrap/glyphicons-halflings-regular.woff2
and move it to the openatrium/themes/oa_radix/assets/font directory.
Here: https://www.drupal.org/node/2625784