Hello!

I would be grateful if you could tell me what the causes of the error in Kamailio version 5.1.5.

2018-12-26T20: 28: 18.3875 "ERROR: tm [tm.c: 1545]: _w_t_relay_to (): t_forward_noack failed"
2018-12-26T20: 28: 18.3879 "ERROR: sl [sl_funcs.c: 362]: sl_reply_error (): stateless error reply used: transaction canceled (487 / SL)"

B.R. Evgeniy