tp上次sae并且扩展了sae下的文件，配置了数据库和扩展。按照手册配置后提示如下，开发模式下，请问该怎么办


Fatal error: Uncaught exception 'think\exception\ClassNotFoundException' with message 'class not exists:\think\sae\Log' in /data1/www/htdocs/665/pmkezhan/1/thinkphp/library/think/Log.php:61 Stack trace: #0 /data1/www/htdocs/665/pmkezhan/1/thinkphp/library/think/Log.php(128): think\Log::init(Array) #1 /data1/www/htdocs/665/pmkezhan/1/thinkphp/library/think/Error.php(84): think\Log::save() #2 [internal function]: think\Error::appShutdown() #3 {main} thrown in /data1/www/htdocs/665/pmkezhan/1/thinkphp/library/think/Log.php on line 61

火狐截图_2016-08-30T14-20-54.923Z.png ( 43.65 KB 下载：23 次 )