[Serusers] The configuration file parse error when socket settings applied

Hi, there~:

I've made a workable SER with the source code version 0.8.14. But while modifying the ser.cfg file, problem occurs.

The default setting is : fifo="/tmp/ser_fifo"

I commented this and add a line to change it into: #fifo="/tmp/ser_fifo" socket="/tmp/ser_socket"

and problems occurred:

# ser start 0(1987) parse error (25,1-7): parse error 0(1987) parse error (25,1-7): ERROR: bad config file (2 errors)

Is this also a file format problem? I've read the Cfg.tab.c generated by bison. It seems no socket token has been parsed. Any suggestions would be appreciated.