IndexError: Layer [UDP] not found

[oscarmh]

Hi, Ive been lately updating my simple_IMSI install but when I run with --sniff I got a UDP Lyer not found error. If I try to run using the port "already in use"... any hint ? Thanks in advance

Full error
Nb IMSI ; TMSI-1 ; TMSI-2 ; IMSI ; country ; brand ; operator ; MCC ; MNC ; LAC ; CellId
Traceback (most recent call last):
File "simple_IMSI-catcher.py", line 533, in
sniff(iface=options.iface, filter="portrange 4729-4732 and not icmp and udp".format(options.port), prn=find_imsi_from_pkg, store=0)
File "/usr/lib/python2.7/dist-packages/scapy/sendrecv.py", line 620, in sniff
r = prn(p)
File "simple_IMSI-catcher.py", line 492, in find_imsi_from_pkg
udpdata = str(p[UDP].payload)
File "/usr/lib/python2.7/dist-packages/scapy/packet.py", line 817, in getitem
raise IndexError("Layer [%s] not found" % lname)
IndexError: Layer [UDP] not found

[Oros42]

Try with last version of simple_IMSI-catcher.py and python3