Unknown Error

[Klio3]

When attempting to run wifi-pumpkin, I get the following error:

File "wifi-pumpkin.py", line 55, in
networkcontrol = CLI_NetworkManager() # add all interface avaliable for exclude
File "/usr/share/WiFi-Pumpkin/core/loaders/checker/networkmanager.py", line 134, in init
self.interfaces = Refactor.get_interfaces()
File "/usr/share/WiFi-Pumpkin/core/utils.py", line 260, in get_interfaces
interfaces['IPaddress'] = Refactor.get_Ipaddr(interfaces['activated'][0])
File "/usr/share/WiFi-Pumpkin/core/utils.py", line 296, in get_Ipaddr
return get_if_addr(card)
File "/usr/local/lib/python2.7/dist-packages/scapy/arch/init.py", line 48, in get_if_addr
return socket.inet_ntoa(get_if_raw_addr(iff))
File "/usr/local/lib/python2.7/dist-packages/scapy/arch/linux.py", line 99, in get_if_raw_addr
return get_if(iff, SIOCGIFADDR)[20:24]
File "/usr/local/lib/python2.7/dist-packages/scapy/arch/common.py", line 19, in get_if
ifreq = ioctl(sck, cmd, struct.pack("16s16x", iff))
struct.error: argument for 's' must be a string

Wireless adapter is an Alfa AWUS036NEH.
I have tried the latest version of the framework I believe, 0.8.5
I'm running armv7l Kali on a Pi, updated today.

Please can you try to help me with this issue, any assistance is much appreciated.

Thanks,
Klio