Asterisk 13.19.0----Function TALK_DETECT not registered

I getting following erros

[Mar 15 08:20:30] ERROR[15876][C-00000002]: pbx_functions.c:699 ast_func_write: Function TALK_DETECT not registered

my dailplan is
exten = 102,1,Answer()
same => n,Set(TALK_DETECT(set)=) ; Enable talk detection
same = n,Playback(demo-instruct)

guy’s please help,thanks!

module show like talk

or ls /usr/lib/asterisk/modules | grep -i talk

and post the output

If module is found on your system load it using module load

It’s OK.Thank you very much!