Can't get parsing to work, UnicodeDecodeError

[MilanDeruelle]

Hi! I'm running the minimal example on Mac with the latest protoc 3.15.3 and the minimal example for the demo parser.
When I execute the d.parse(), I get the following errors using HLTV & Faceit demos:

Exception ignored in: 'demoparser.demofile.DemoFile.handle_data_table'
Traceback (most recent call last):
  File "demoparser/demofile.pyx", line 584, in demoparser.demofile.DemoFile.parse_instance_baseline
  File "demoparser/util.pyx", line 76, in demoparser.util.parse_entity_update
  File "demoparser/props.pyx", line 40, in demoparser.props.Decoder.decode
  File "demoparser/props.pyx", line 152, in demoparser.props.Decoder.decode_string
  File "demoparser/bitbuffer.pyx", line 219, in demoparser.bitbuffer.Bitbuffer.read_string
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

---------------------------------------------------------------------------

CommandError                              Traceback (most recent call last)

<ipython-input-3-e323c47ae68f> in <module>
---> 14 d.parse()

~/opt/anaconda3/envs/hltvNades/lib/python3.8/site-packages/demoparser/demofile.pyx in demoparser.demofile.DemoFile.parse()

~/opt/anaconda3/envs/hltvNades/lib/python3.8/site-packages/demoparser/demofile.pyx in demoparser.demofile.DemoFile.parse()

CommandError: Unrecognized command

My Code:

import sys
from demoparser.demofile import DemoFile

def grenade_thrown(event, msg):
    print(event)
    print(msg)

data = open('./e2a43690-d2ac-4140-b468-322f9a03b3da.dem', "rb").read()

d = DemoFile(data)
d.add_callback('grenade_thrown', grenade_thrown)


d.parse()

Any ideas what could be wrong?