Fatal error: Uncaught Error: Class 'think\Loader' not found in D:\vhostroot\LocalUser\koada\www\thinkphp\base.php:59 Stack trace: #0 D:\vhostroot\LocalUser\koada\www\thinkphp\start.php(16): require() #1 D:\vhostroot\LocalUser\koada\www\index.php(23): require('D:\\vhostroot\\Lo...') #2 {main} thrown in D:\vhostroot\LocalUser\koada\www\thinkphp\base.php on line 59