why?

[jason7861]

Traceback (most recent call last):
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\multiprocessing\process.py", line 315, in _bootstrap
self.run()
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\multiprocessing\process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\Plutus\plutus.py", line 65, in main
public_key = private_key_to_public_key(private_key, args['fastecdsa'])
File "C:\Users\Plutus\plutus.py", line 25, in private_key_to_public_key
pk = PrivateKey().fromString(bytes.fromhex(private_key))
File "C:\Users\l\AppData\Local\Programs\Python\Python310\lib\site-packages\ellipticcurve\privateKey.py", line 65, in fromString
return PrivateKey(secret=intFromHex(string), curve=curve)
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\ellipticcurve\utils\binary.py", line 13, in intFromHex
return int(hexadecimal, 16)
ValueError: invalid literal for int() with base 16: b'G\xf7\x8c$m\x83\xb4\x07\xe8\xcfF\xd4\xc3d\xc0\xf2)\xfa\x96\xef\xa6o\xcc\xc9;a\x89{\xe5y\x83&'