After some updates (some plugins, Oxygen 3.7.1 -> 3.8.1 and WP 5.7.2 -> 5.8 ) applied on pre-production website without problem, I applied the same updates on production site.
Only on production site, I’m now unable to access stylesheets.
On the front-end : website looks good, stylesheets seems to run fine.
I tried to resign shortcodes, resave permalinks, clear oxygen cache : no change.
What more can I do ?