[4839]: {INVITE (1)] | Seq=101 | Source IP=46.166.139.7 (udp)} ERROR: <core> [core/parser/sdp/sdp.c:212]: set_sdp_payload_attr(): Invalid payload location
[4839]: {INVITE (1)] | Seq=101 | Source IP=46.166.139.7 (udp)} ERROR: <core> [core/parser/sdp/sdp.c:212]: set_sdp_payload_attr(): Invalid payload location
[4839]: {INVITE (1)] | Seq=101 | Source IP=46.166.139.7 (udp)} ERROR: <core> [core/parser/sdp/sdp.c:228]: set_sdp_payload_fmtp(): Invalid payload location
[4839]: {INVITE (1)] | Seq=101 | Source IP=46.166.139.7 (udp)} ERROR: <core> [core/parser/sdp/sdp.c:212]: set_sdp_payload_attr(): Invalid payload location

This is how the SIP Packet is looking:

2018/02/15 10:51:40.916040 46.166.139.7:30189 -> X.X.X.X:5060

INVITE sip:01031203697179@X.X.X.X:5060 SIP/2.0
Via: SIP/2.0/UDP 46.166.139.7:30189;branch=z9hG4bK-5342365299746297160962993236828333618949;rport=30189
From: <sip:88893855391@46.166.139.7:30189>;tag=0vkn019bur
To: <sip:01031203697179@X.X.X.X:5060>
Contact: <sip:88893855391@46.166.139.7:30189>
Call-ID: 0889633580294714035892119863939070195463
CSeq: 101 INVITE
User-Agent: Hello Annonymous
Max-Forwards: 70
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Content-Type: application/sdp
Content-Length: 356

v=0
o=SIP-Session 950029666 1307322426 IN IP4 46.166.139.7
s=SIP
c=IN IP4 46.166.139.7
t=0 0
m=audio 5075 RTP/AVP 18 0 8 101
a=fmtp:101 0-15
a=rtpmap:18 G729/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:3 GSM/8000
a=rtpmap:9 G722/8000
a=fmtp:9 bitrate=64000
a=rtpmap:104 G726-16/8000
a=rtpmap:101 telephone-event/8000
a=sendrecv

Thank You.