Getting an error code on line twenty

These are the error codes that I am getting, and I haven't changed anything.

Please let me know how to fix this.


Warning: session_start() [function.session-start]: open(/var/chroot/home/content/99/10360599/tmp/sess_7s0ujmlgqb01n0nonkkeakdep1, O_RDWR) failed: No such file or directory (2) in /home/content/99/10360599/html/wp-content/themes/garage/functions.php on line 20

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/99/10360599/html/wp-content/themes/garage/functions.php:20) in /home/content/99/10360599/html/wp-content/themes/garage/functions.php on line 20


Thanks,

Sean