Fatal error: Cannot declare class think\Cookie, because the name is already in use in /www/wwwroot/j8_backend_0910/thinkphp/library/think/App.php on line 14

Fatal error: Uncaught Error: Class 'think\App' not found in /www/wwwroot/j8_backend_0910/thinkphp/library/think/exception/Handle.php:44 Stack trace: #0 /www/wwwroot/j8_backend_0910/thinkphp/library/think/Error.php(47): think\exception\Handle->report() #1 /www/wwwroot/j8_backend_0910/thinkphp/library/think/Error.php(88): think\Error::appException() #2 [internal function]: think\Error::appShutdown() #3 {main} thrown in /www/wwwroot/j8_backend_0910/thinkphp/library/think/exception/Handle.php on line 44