As a follow-up, now, when using the nightly build, I'm getting a different error:
```log ERROR: tls [tls_util.h:42]: tls_err_ret(): TLS accept:error:1408F10B:SSL routines:ssl3_get_record:wrong version number Aug 20 22:46:01 ubuntu-server /usr/sbin/kamailio[31861]: ERROR: <core> [core/tcp_read.c:1505]: tcp_read_req(): ERROR: tcp_read_req: error reading - c: 0x7f16f4abed70 r: 0x7f16f4abedf0 (-1) Aug 20 22:46:02 ubuntu-server /usr/sbin/kamailio[31862]: ERROR: tls [tls_util.h:42]: tls_err_ret(): TLS accept:error:1408F10B:SSL routines:ssl3_get_record:wrong version number Aug 20 22:46:02 ubuntu-server /usr/sbin/kamailio[31862]: ERROR: <core> [core/tcp_read.c:1505]: tcp_read_req(): ERROR: tcp_read_req: error reading - c: 0x7f16f4abed70 r: 0x7f16f4abedf0 (-1) ```