[horde] HORDE: PHP ERROR session failed

[onastvar at gmail.com]

Hello,

I'm looking for some troubleshooting guidance, since I'm having issues with
logging into HORDE as admin, the following errors are in the log:

HORDE: PHP ERROR: session_start():
open(/var/www/web2/phptmp//sess_igvqg1c005951lbo81gir6nd93, O_RDWR) failed:
No such file or directory (2) [pid 13266 on line 204 of
"/usr/share/php/Horde/Session.php"]
Horde is installed to */var/www/horde*

My system
ISPConfig 3.0.5.4p9 | Debian Wheezy | BIND | Dovecot 2.1.7 | Apache
2.2.22 | MySQL 5.5.38 | PHP 5.4.45

Any help would be appreciated.

Thanks,
Anri