cant deploy solidity contract with python

[zmctinas]

• Version: 5.31.3
• Python:3.9.16
• OS: osx

What was wrong?

Please include any of the following that are applicable:

• The code which produced the error

def compile_source_file(self, file_path):
    with open(file_path, 'r') as f:
        source = f.read()

    return compile_source(source, output_values=['abi', 'bin'])

contract_source_path = os.path.join(base_dir, 'contracts/greeter.sol')

compiled_sol = self.compile_source_file(contract_source_path)
contract_id, contract_interface = compiled_sol.popitem()
contract = self.w3.eth.contract(abi=contract_interface['abi'], bytecode=contract_interface['bin'])

gas = self.w3.eth.gas_price
nonce = self.w3.eth.getTransactionCount(wallet_address)
chain_id = self.w3.eth.chain_id


deploy_transaction = contract.constructor().build_transaction({
    'chainId': chain_id,
    'from': wallet_address,
    'gas': 4000000,
    'gasPrice': gas,
    'nonce': nonce,
})
signed_txn = account.sign_transaction(deploy_transaction)
tx_hash = self.w3.eth.send_raw_transaction(signed_txn.rawTransaction)

tx_receipt = self.w3.eth.waitForTransactionReceipt(tx_hash)

contract_address = tx_receipt['contractAddress']
print(f'contract_address: {contract_address}')

• The full output of the error

Traceback (most recent call last):
  File "/Users/xiaoweiwang/Documents/python/bl-batch-operations/scripts/contract_module/deploy_contract.py", line 85, in <module>
    dc.deploy_contract('a5c5bb8d49d75b71247900e28cfe628396ab')
  File "/Users/xiaoweiwang/Documents/python/bl-batch-operations/scripts/contract_module/deploy_contract.py", line 72, in deploy_contract
    tx_hash = self.w3.eth.send_raw_transaction(signed_txn.rawTransaction)
  File "/Users/xiaoweiwang/.local/share/virtualenvs/bl-batch-operations-5D3lKCYn/lib/python3.9/site-packages/web3/eth.py", line 831, in send_raw_transaction
    return self._send_raw_transaction(transaction)
  File "/Users/xiaoweiwang/.local/share/virtualenvs/bl-batch-operations-5D3lKCYn/lib/python3.9/site-packages/web3/module.py", line 57, in caller
    result = w3.manager.request_blocking(method_str,
  File "/Users/xiaoweiwang/.local/share/virtualenvs/bl-batch-operations-5D3lKCYn/lib/python3.9/site-packages/web3/manager.py", line 198, in request_blocking
    return self.formatted_response(response,
  File "/Users/xiaoweiwang/.local/share/virtualenvs/bl-batch-operations-5D3lKCYn/lib/python3.9/site-packages/web3/manager.py", line 171, in formatted_response
    raise ValueError(response["error"])
ValueError: {'code': 3, 'message': 'Failed to serialize transaction: toAddressIsNull'}

• What type of node you were connecting to.
  era testnet 'https://testnet.era.zksync.dev'

how to fix it please

[fselmo]

ValueError: {'code': 3, 'message': 'Failed to serialize transaction: toAddressIsNull'}

This is coming from your node, not the library. I assume you want to deploy the contract so you likely need to specify the zero address ("0x0000000000000000000000000000000000000000") in the "to" field of your transaction with the current setup.

For usage questions, please refer to the documentation or ask in the Discord server.