[Serusers] Cannot open fifo

[George KAPELIOS]

After I managed to login to serweb through the
../admin/index.php as admin user, I 'm trying to
access the admin user's account.

I can open the page and even make changes and save
them, but I'm receiving the following warning message:
Warning: fopen(“/tmp/ser_fifo”, “w”) – Permission
denied in /var/www/html/serweb/functions.php on line
172
Sorry – cannot open fifo

Nothing has been changed on line 172 of the
functions.php file and the ser_fifo file exists in the
/tmp directory with 0 bytes size.

Any idea what it might cause such a problem ?

best regards,
george