Error copied from debug output:
`
Less_Exception_Parser thrown with message "File fontawesome.less not found. in variables.less"
Stacktrace:
#53 Less_Exception_Parser in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Parser.php:2793
#52 Less_Parser:Error in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Parser.php:471
#51 Less_Parser:parseFile in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php:275
#50 Less_Tree_Import😛arseImport in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php:198
#49 Less_Tree_Import:compile in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Ruleset.php:248
#48 Less_Tree_Ruleset:evalImports in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php:279
#47 Less_Tree_Import😛arseImport in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Import.php:198
#46 Less_Tree_Import:compile in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Ruleset.php:248
#45 Less_Tree_Ruleset:evalImports in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Ruleset.php:235
#44 Less_Tree_Ruleset😛repareRuleset in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Tree/Ruleset.php:70
#43 Less_Tree_Ruleset:compile in /sites/missingtracker.com/flarum/vendor/oyejorge/less.php/lib/Less/Parser.php:199
#42 Less_Parser:getCss in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Compiler/LessCompiler.php:86
#41 Flarum\Frontend\Compiler\LessCompiler:compile in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Compiler/RevisionCompiler.php:151
#40 Flarum\Frontend\Compiler\RevisionCompiler:save in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Compiler/RevisionCompiler.php:81
#39 Flarum\Frontend\Compiler\RevisionCompiler:commit in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Content/Assets.php:60
#38 Flarum\Frontend\Content\Assets:commit in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Content/Assets.php:50
#37 Flarum\Frontend\Content\Assets:__invoke in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Frontend.php:65
#36 Flarum\Frontend\Frontend:populate in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Frontend.php:57
#35 Flarum\Frontend\Frontend:document in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Frontend/Controller.php:34
#34 Flarum\Frontend\Controller:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/RouteHandlerFactory.php:40
#33 Flarum\Http\RouteHandlerFactory:Flarum\Http{closure} in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/DispatchRoute.php:67
#32 Flarum\Http\Middleware\DispatchRoute:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#31 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/ShareErrorsFromSession.php:58
#30 Flarum\Http\Middleware\ShareErrorsFromSession:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#29 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/SetLocale.php:51
#28 Flarum\Http\Middleware\SetLocale:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#27 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/CheckCsrfToken.php:25
#26 Flarum\Http\Middleware\CheckCsrfToken:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#25 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php:34
#24 Flarum\Http\Middleware\AuthenticateWithSession:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#23 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php:52
#22 Flarum\Http\Middleware\RememberFromCookie:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#21 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/StartSession.php:62
#20 Flarum\Http\Middleware\StartSession:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#19 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/CollectGarbage.php:48
#18 Flarum\Http\Middleware\CollectGarbage:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#17 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php:29
#16 Flarum\Http\Middleware\ParseJsonBody:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#15 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Middleware/HandleErrorsWithWhoops.php:43
#14 Flarum\Http\Middleware\HandleErrorsWithWhoops:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#13 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php:83
#12 Zend\Stratigility\MiddlewarePipe:process in /sites/missingtracker.com/flarum/vendor/middlewares/request-handler/src/RequestHandler.php:84
#11 Middlewares\RequestHandler:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#10 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/middlewares/base-path-router/src/BasePathRouter.php:97
#9 Middlewares\BasePathRouter:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#8 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Middleware/OriginalMessages.php:41
#7 Zend\Stratigility\Middleware\OriginalMessages:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#6 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/middlewares/base-path/src/BasePath.php:53
#5 Middlewares\BasePath:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/Next.php:60
#4 Zend\Stratigility\Next:handle in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php:83
#3 Zend\Stratigility\MiddlewarePipe:process in /sites/missingtracker.com/flarum/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php:72
#2 Zend\Stratigility\MiddlewarePipe:handle in /sites/missingtracker.com/flarum/vendor/zendframework/zend-httphandlerrunner/src/RequestHandlerRunner.php:95
#1 Zend\HttpHandlerRunner\RequestHandlerRunner:run in /sites/missingtracker.com/flarum/vendor/flarum/core/src/Http/Server.php:46
#0 Flarum\Http\Server:listen in /sites/missingtracker.com/files/index.php:22
`