Hi, Thanks for the answer! I am building my own packages from latest 5.6 and (just) figured out it was one of my (existing) patches that was causing that error. Thank you, Stefan ________________________________ From: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Sent: Friday, August 26, 2022 6:33:03 PM To: Kamailio (SER) - Users Mailing List; Stefan-Cristian Mititelu Subject: Re: [SR-Users] app_python module load error in 5.6 Hello, what is the exact version printed by Kamailio? Are you using own build deb packages or the ones from deb.kamailio.org? Cheers, Daniel On 25.08.22 10:45, Stefan-Cristian Mititelu wrote: Hello, I am trying to load app_python.so module in kamailio 5.6 and I am getting the following error, under debian bullseye: ERROR: <core> [core/sr_module.c:573]: load_module(): could not open module </usr/lib/x86_64-linux-gnu/kamailio/modules/app_python.so>: /usr/lib/x86_64-linux-gnu/kamailio/modules/app_python.so: undefined symbol: LOG_ The app_python.so file exists, under that path. Same ERROR for app_python3.so. I have tried updating some modules's Makefile LDFLAGS but didn't work so far; still searching. Any ideas? Thank you, Stefan __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com<http://www.asipto.com> www.twitter.com/miconda<http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda>