[Python] PyX not installed correctly when using scapy

I am trying to use scapy in python 3.6 to parse pcap files, and of the features I am trying to use is pdfdump.

from scapy.all import *
packets = rdpcap('***path***/nitroba.pcap')
for packet in packets[0:1]:
packet.psdump("isakmp_pkt.eps",layer_shift=1)


And I am getting the following error: "ImportError: PyX and its depedencies must be installed"

Obviously I installed it, and a simple "import pyx" works, but the error persists. I did some digging and found that the problem originates in this code:

def _test_pyx():
"""Returns if PyX is correctly installed or not"""
try:
with open(os.devnull, 'wb') as devnull:
r = subprocess.check_call(["pdflatex", "--version"], stdout=devnull, stderr=subprocess.STDOUT)
except:
return False
else:
return r == 0


when executed, it determines if pyx is installed correctly, but it says "FileNotFoundError: [WinError 2] The system cannot find the file specified".

Ideas?

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