Optional parameter in fee_history causes problems when omitted

[antazoey]

• Version: 6.13.0
• Python: 3.10.13
• OS: macos
• pip freeze output

<put the output from running pip freeze here>

What was wrong?

We have been doing this in our code:

fee_history = self.web3.eth.fee_history(1, BlockNumber(latest_block_number))

However, it now failed with the following error:

ValueError: {'code': -32602, 'message': 'Errors encountered in param 2: Invalid value null supplied to : Array<Float number> | undefined', 'data': {'message': 'Errors encountered in param 2: Invalid value null supplied to : Array<Float number> | undefined'}}

To fix it on my end, I had to change the line to:

fee_history = self.web3.eth.fee_history(1, BlockNumber(latest_block_number), reward_percentiles=[])

How can it be fixed?

If given None , change to [] in the code implementation.

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[antazoey]

Ok, I am realizing this does not happen on normal geth nodes but does happen on Anvil and Hardhat.

[antazoey]

maybe the fix is to actually remove the fee reward_percentiles parameter from the arguments list if it is null

[reedsa]

Closed in #3185