Fatal error: Uncaught Error: Class 'think\Loader' not found in /www/wwwroot/df75/thinkphp/base.php:59 Stack trace: #0 /www/wwwroot/df75/thinkphp/start.php(16): require() #1 /www/wwwroot/df75/index.php(39): require('/www/wwwroot/df...') #2 {main} thrown in /www/wwwroot/df75/thinkphp/base.php on line 59