Fatal error: Uncaught Error: Call to undefined function C() in /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/tpl/think_exception.tpl:2 Stack trace: #0 /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/library/think/exception/Handle.php(184): include() #1 /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/library/think/exception/Handle.php(97): think\exception\Handle->convertExceptionToResponse(Object(think\exception\ErrorException)) #2 /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/library/think/Error.php(56): think\exception\Handle->render(Object(think\exception\ErrorException)) #3 /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/library/think/Error.php(90): think\Error::appException(Object(think\exception\ErrorException)) #4 [internal function]: think\Error::appShutdown() #5 {main} thrown in /www/wwwroot2/www.7jbbk.com/tp5/thinkphp/tpl/think_exception.tpl on line 2