in my log file.
I though it's the same issue with MarcLejeune
[2019-06-11 02:32:28] production.ERROR: Less_Exception_Parser: File fa-brands.less
not found. in variables.less in /home/admin/domains/skillsolved.com/public_html/forum/vendor/oyejorge/less.php/lib/Less/Parser.php:2793
Stack trace:
#0 /home/admin/domains/skillsolved.com/public_html/forum/vendor/oyejorge/less.php/lib/Less/Parser.php(471): Less_Parser->Error('File `fa-brands...')
#1 /home/admin/domains/skillsolved.com/public_html/forum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php(275): Less_Parser->parseFile('fa-brands.less', 'fa-brands.less', true)
#2 /home/admin/domains/skillsolved.com/public_html/forum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php(198): Less_Tree_Import->ParseImport('fa-brands.less', 'fa-brands.less', Object(Less_Environment))