Notice: Object of class Less_Tree_Dimension could not be converted to int in /var/www/flarum/vendor/wikimedia/less.php/lib/Less/Functions.php on line 36

Notice: Object of class Less_Tree_Dimension could not be converted to int in /var/www/flarum/vendor/wikimedia/less.php/lib/Less/Functions.php on line 36

Fatal error: Uncaught Laminas\HttpHandlerRunner\Exception\EmitterException: Unable to emit response; headers already sent in /var/www/flarum/vendor/wikimedia/less.php/lib/Less/Functions.php:36 in /var/www/flarum/vendor/laminas/laminas-httphandlerrunner/src/Exception/EmitterException.php:16 Stack trace: #0 /var/www/flarum/vendor/laminas/laminas-httphandlerrunner/src/Emitter/SapiEmitterTrait.php(38): Laminas\HttpHandlerRunner\Exception\EmitterException::forHeadersSent('/var/www/flarum...', 36) #1 /var/www/flarum/vendor/laminas/laminas-httphandlerrunner/src/Emitter/SapiEmitter.php(22): Laminas\HttpHandlerRunner\Emitter\SapiEmitter->assertNoPreviousOutput() #2 /var/www/flarum/vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(75): Laminas\HttpHandlerRunner\Emitter\SapiEmitter->emit(Object(Laminas\Diactoros\Response\HtmlResponse)) #3 /var/www/flarum/vendor/flarum/core/src/Http/Server.php(45): Laminas\HttpHandlerRunner\RequestHandlerRunner->run() #4 /var/www/flarum/public/index.php(26): Flarum\Http\Server->listen() #5 {main} thrown in /var/www/flarum/vendor/laminas/laminas-httphandlerrunner/src/Exception/EmitterException.php on line 16