I have a own template in app/design/frontend/tm/XXX-theme. I built it like described in the dev docs. Parent theme is luma. Magento run in developer Mode. After i use setup:static-content:deploy de_DE en_GB. SSH shows:
Compilation from source: frontend/tm/XXX-theme/de_DE/css/styles-m.less Warning: Invalid argument supplied for foreach() in /www/htdocs/XXX/XXX/XXX/vendor/oyejorge/less.php/lib/Less/Tree/Value.php on line 26
In Browser Template CSS is not loading:
The resource from “https://www.example.com/pub/static/frontend/tm/XXX-theme/de_DE/css/styles-m.css” was blocked due to MIME type (“text/plain”) mismatch (X-Content-Type-Options: nosniff)
Have anyone a Idea? I read since yet many articel for this Problem and tried. But I have no clue.