环境：centos7,php5.6,nginx，itop2.7
conf目录为777权限
安装就绪，点击install步骤，点击下一步时报错：
Fatal error: Uncaught exception 'ConfigException' with message 'Could not find configuration file: file = /home/itop/conf/production/config-itop.php' in /home/itop/core/config.class.inc.php:1471 Stack trace: #0 /home/itop/core/config.class.inc.php(1488): Config->CheckFile('configuration', '/home/itop/conf...') #1 /home/itop/core/config.class.inc.php(1441): Config->Load('/home/itop/conf...') #2 /home/itop/setup/wizardsteps.class.inc.php(2569): Config->__construct('/home/itop/conf...') #3 /home/itop/setup/wizardcontroller.class.inc.php(191): WizStepDone->Display(Object(SetupPage)) #4 /home/itop/setup/wizardcontroller.class.inc.php(132): WizardController->DisplayStep(Object(WizStepDone)) #5 /home/itop/setup/wizardcontroller.class.inc.php(263): WizardController->Next() #6 /home/itop/setup/index.php(58): WizardController->Run() #7 {main} thrown in /home/itop/core/config.class.inc.php on line 1471

关于权限，全部给的777