HI 
this is Gaurav 
im using kamailio 5.1.2 on ubuntu 18.4

i am trying to configure LetsEncrypt (tls) for kamailio sing following link
https://www.fredposner.com/1836/kamailio-tls-and-letsencrypt/ 

but unable to start kamailio ,i m getting these error 

------->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Apr 19 11:23:57 ubuntufresh systemd[1]: Starting Kamailio (OpenSER) - the Open Source SIP Server...
Apr 19 11:23:58 ubuntufresh kamailio[5365]: INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module
Apr 19 11:23:58 ubuntufresh kamailio[5365]: INFO: <core> [core/tcp_main.c:4721]: init_tcp(): using epoll_lt as the io watch method (auto detected)
Apr 19 11:23:58 ubuntufresh kamailio[5365]: Listening on
Apr 19 11:23:58 ubuntufresh kamailio[5365]: Aliases:
Apr 19 11:23:58 ubuntufresh kernel: kamailio[5378]: segfault at 0 ip 00007f8d6fdac646 sp 00007ffe8e2337f8 error 4 in libc-2.27.so[7f8d6fcfb000+1e7000]
Apr 19 11:23:58 ubuntufresh kamailio[5365]: ERROR: <core> [core/daemonize.c:303]: daemonize(): Main process exited before writing to pipe
Apr 19 11:23:58 ubuntufresh systemd[1]: kamailio.service: Control process exited, code=exited status=255
Apr 19 11:23:58 ubuntufresh systemd[1]: kamailio.service: Failed with result 'exit-code'.
Apr 19 11:23:58 ubuntufresh systemd[1]: Failed to start Kamailio (OpenSER) - the Open Source SIP Server.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<------------------------------------

plz help



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Regards:
Gaurav Kumar