Fatal error:  Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '() limit 20' at line 1 in /data/www/framework/PdoMySQL.php:84
Stack trace:
#0 /data/www/framework/PdoMySQL.php(84): PDOStatement->execute()
#1 /data/www/framework/PdoMySQL.php(39): PdoMySQL->exec()
#2 /data/www/app/a/dao-n/ArticleDao.php(33): PdoMySQL->query()
#3 /data/www/app/a/action-n/GotoAction.php(17): ArticleDao::findWithRandom()
#4 /data/www/framework/Controller.php(101): GotoAction->execute()
#5 /data/www/index.php(4): Controller->execute()
#6 {main}
  thrown in /data/www/framework/PdoMySQL.php on line 84