PHP Warning when uploading excel

Need a skilled PHP ninja to solve an error. PHP warning include([login to view URL]): failed to open stream: No such file or directory /public_html/yii/framework/[login to view URL](427) 415 { 416 include($classFile); 417 if(YII_DEBUG && basename(realpath($classFile))!==$className.'.php') 418 throw new CException(Yii::t('yii','Class name "{class}" does not match class file "{file}".', array( 419 '{class}'=>$className, 420 '{file}'=>$classFile, 421 ))); 422 break; 423 } 424 } 425 } 426 else 427 include($className.'.php'); 428 } 429 else // class name with namespace in PHP 5.3 430 { 431 $namespace=str_replace('\\','.',ltrim($className,'\\')); 432 if(($path=self::getPathOfAlias($namespace))!==false) 433 include($path.'.php'); 434 else 435 return false; 436 } 437 return class_exists($className,false) || interface_exists($className,false); 438 } 439 return true;