Problem with login to admin panel

I moved my web site to another hosting  and I can't login to admin panel 
I have this error 
Warning: session_write_close(): open(/var/php_sessions/sess_72db28f7c08facd40acda07b9e654625, O_RDWR) failed: No such file or directory (2) in ~/includes/library/ on line 59 Warning: session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in ~/includes/library/ on line 59

I need help how to fix it
This is not LiteCart related.

Make sure your PHP sessions directory exists and is writable or change your PHP.ini configuration.