Can I get help resolving this incorrect padding error?

_{Function description:}

decodexorbase64(string, key) which takes the output of the previous function (xor'd string and base64 encoded key) and returns the original string, in b' format

My code:

def decodexorbase64(code, keyb64):

keyoriginal = binascii.a2b_base64(key) stroriginal = binascii.a2b_base64(string) return (stroriginal, keyoriginal)

Issue:

print(decodexorbase64(b'\x02\x01\x04\x00\x03\x00Y^\x00', b'a2VybWl0 '))

Gives the error: binascii.Error: Incorrect padding

What can I write in my code to avoid this error?