I 'm using foreground (branch REL1_42) on mediawiki 1.42, with a linux apache server. Foreground is in a directory called foreground but it references fonts in a directory called Foreground. So I tried to rename the directory, which triggered an error.
I had to create a Foreground directory with an assets symlink to the foreground/assets directory, so that icons would display...
There might be a correction somewhere to correct that behavior...
Thanks for everything