Fatal error: Uncaught Error: Class 'Assetic\Filter\BaseCssFilter' not found in /home/cooplafobq/newplanning/vendor/kriswallsmith/assetic/src/Assetic/Filter/CssRewriteFilter.php:21 Stack trace: #0 {main} thrown in /home/cooplafobq/newplanning/vendor/kriswallsmith/assetic/src/Assetic/Filter/CssRewriteFilter.php on line 21