Hello/Hi/Greetings,

I've just noticed that Icons_Set 1.1.7 running on Piwigo 2.7.4 gives 404 errors on iconset.css and iconset_disabled.css.
It seems that the CSS icons import other css file with:

@import 'relative-url'

If I replace these with:

@import url(relative-url)

Then the 404s go away.