mac 跳转网页可以显示结果，但是下面会有报错，不知道是什么问题

Question

Fatal error: Uncaught think\exception\ErrorException: mkdir(): Permission denied in /opt/lampp/htdocs/zerg/thinkphp/library/think/log/driver/File.php:49 Stack trace: #0 [internal function]: think\Error::appError(2, 'mkdir(): Permis...', '/opt/lampp/htdo...', 49, Array) #1 /opt/lampp/htdocs/zerg/thinkphp/library/think/log/driver/File.php(49): mkdir('/opt/lampp/htdo...', 493, true) #2 /opt/lampp/htdocs/zerg/thinkphp/library/think/Log.php(157): think\log\driver\File->save(Array) #3 /opt/lampp/htdocs/zerg/thinkphp/library/think/Error.php(84): think\Log::save() #4 [internal function]: think\Error::appShutdown() #5 {main} thrown in /opt/lampp/htdocs/zerg/thinkphp/library/think/log/driver/File.php on line 49