hi, trying kamailio 5.7.3 with KEMI pythons3s sample from https://github.com/kamailio/kamailio/blob/master/misc/examples/kemi/kamaili… trying simple register with sipsak sipsak -U  --sip-uri "sip:cervajs@kamailio.example.com"  -u cervajs -a top_secret  4(28805) ERROR: PY8 {REGISTER}: app_python3s [apy3s_kemi.c:141]: apy3s_exec_func(): error exception occurred  4(28805) ERROR: PY8 {REGISTER}: app_python3s [apy3s_exception.c:167]: apy3s_handle_exception(): apy3s_exec_func: ksr_request_route((null)): Unhandled exception in the Python code: Traceback (most recent call last):   File "/etc/kamailio/kamailio.py", line 31, in ksr_request_route     if ksr_route_natdetect()==-255 :   File "/etc/kamailio/kamailio.py", line 238, in ksr_route_natdetect     if KSR.nathelper.nat_uac_test(19)>0 : AttributeError: module 'KSR' has no attribute 'nathelper' i see nat_uac_test in doc https://kamailio.org/docs/tutorials/5.7.x/kamailio-kemi-framework/modules/#… any tips/ideas? happy christmas Marek