高手看看这个数据库是怎么回事？？

安装完之后，我用PHPMYADMIN
下面的页面就提示这个？？
Warning: Unknown(): open(/tmp\sess_64e1fe3d2d59a2506b66924023a9391d, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0
大伙说说这是什么东西吗？？？？看不懂