How can I fix this error?

WARNING: no fork mode stateless - initializing 0(0) Maxfwd module- initializing 0(0) INFO: udp_init: SO_RCVBUF is initially 110592 0(0) INFO: udp_init: SO_RCVBUF is finally 221184 2(0) INFO: fifo process starting: 6710 2(6710) SER: open_uac_fifo: fifo server up at /tmp/ser_fifo... 2(6710) ERROR: open_reply_pipe: open error (/tmp/webfifo_1171263842): No such file or directory 2(6710) ERROR: fifo_reply: no reply pipe /tmp/webfifo_1171263842 2(6710) ERROR: open_reply_pipe: open error (/tmp/webfifo_1374470966): No such file or directory 2(6710) ERROR: fifo_reply: no reply pipe /tmp/webfifo_1374470966 2(6710) ERROR: open_reply_pipe: open error (/tmp/webfifo_1359801488): No such file or directory 2(6710) ERROR: fifo_reply: no reply pipe /tmp/webfifo_1359801488 2(6710) ERROR: open_reply_pipe: open error (/tmp/webfifo_90028122): No such file or directory 2(6710) ERROR: fifo_reply: no reply pipe /tmp/webfifo_90028122 2(6710) ERROR: open_reply_pipe: open error (/tmp/webfifo_1698796794): No such file or directory 2(6710) ERROR: fifo_reply: no reply pipe /tmp/webfifo_1698796794

------------------------------------------------------------------------------------------------ Below is an excerpt of my ser.cfg

------------------------------------------------------------------------------------------------ # $Id: hello-world.cfg 46 2006-01-25 04:21:30Z /CN=Paul Hazlett/emailAddress=paul@onsip.org $ debug=3 fork=no log_stderror=yes

listen=192.168.0.2

port=5060 children=4

dns=no rev_dns=no fifo="/tmp/ser_fifo"

fifo_mode = 0666

fifo_db_url="mysql://ser:heslo@localhost/ser" ---------------------------------------------------------------------------------------------

Yours, Mike.