问如何克服“salt必须是字节字符串错误”？

EN

C:\Python38\decrypt_bitcoinj_seed-master>py decrypt_bitcoinj_seed.py
Traceback (most recent call last):
  File "decrypt_bitcoinj_seed.py", line 319, in <module>
    wallet = load_wallet(wallet_file, get_password)
  File "decrypt_bitcoinj_seed.py", line 132, in load_wallet
    key  = pylibscrypt.scrypt(password.encode('utf_16_be'), salt, olen=32)
  File "C:\Python38\lib\site-packages\pylibscrypt\hashlibscrypt.py", line 49, in scrypt
    check_args(password, salt, N, r, p, olen)
  File "C:\Python38\lib\site-packages\pylibscrypt\common.py", line 49, in check_args
    raise TypeError('salt must be a byte string')
TypeError: salt must be a byte string

    if not isinstance(password, bytes):
        raise TypeError('password must be a byte string')
    if not isinstance(salt, bytes):
        raise TypeError('salt must be a byte string')
    if not isinstance(N, numbers.Integral):
        raise TypeError('N must be an integer')
    if not isinstance(r, numbers.Integral):
        raise TypeError('r must be an integer')
    if not isinstance(p, numbers.Integral):
        raise TypeError('p must be an integer')
    if not isinstance(olen, numbers.Integral):
        raise TypeError('length must be an integer')
    if N > 2**63:
        raise ValueError('N cannot be larger than 2**63')
    if (N & (N - 1)) or N < 2:
        raise ValueError('N must be a power of two larger than 1')
    if r <= 0:
        raise ValueError('r must be positive')
    if p <= 0:
        raise ValueError('p must be positive')
    if r * p >= 2**30:
        raise ValueError('r * p must be less than 2 ** 30')
    if olen <= 0:
        raise ValueError('length must be positive')