When using"Contract.decode_function_input" , TypeError: 'NoneType' object is not iterable

[HasaTan]

What happened?

I am learning by following https://web3py.readthedocs.io/en/v6.20.0/web3.contract.html#web3.contract.Contract.decode_function_input

my code is as follows:

from hexbytes import HexBytes
from web3 import Web3,contract,EthereumTesterProvider
from web3.contract import Contract

    w3 = Web3(Web3.HTTPProvider('https://mainnet.infura.io/v3/xxxxxxx'))
    transaction = w3.eth.get_transaction('0xf32e5a06a8e2929a6b0ae0d5caa423e51340e5fefa1a03def91979f01d063ed5')
    TX_input=transaction.input
    aa=contract.Contract.decode_function_input(TX_input)
    print(aa)

but it may be something wrong:

Traceback (most recent call last):
  File "", line 35, in <module>
    main()
  File "", line 24, in main
    aa=contract.Contract.decode_function_input(TX_input)
  File "", line 31, in _wrapper
    return self.method(objtype, *args, **kwargs)
  File "", line 825, in decode_function_input
    func = self.get_function_by_selector(data[:4])
  File "", line 31, in _wrapper
    return self.method(objtype, *args, **kwargs)
  File "", line 814, in get_function_by_selector
    fns = self.find_functions_by_identifier(
  File "", line 31, in _wrapper
    return self.method(objtype, *args, **kwargs)
  File "", line 546, in find_functions_by_identifier
    find_functions_by_identifier(
  File "", line 245, in find_functions_by_identifier
    fns_abi = filter_by_type("function", contract_abi)
  File "", line 103, in filter_by_type
    return [abi for abi in contract_abi if abi["type"] == _type]
TypeError: 'NoneType' object is not iterable

Code that produced the error

No response

Full error output

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Fill this section in if you know how this could or should be fixed

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web3 Version

6.20.0

Python Version

3.9

Operating System

win 11

Output from pip freeze

No response