Solidity合约getFromStorage函数运行时回滚错误排查求助

我编写的Solidity合约其余部分运行正常，但getFromStorage函数调用时触发交易回滚，执行失败。相关代码和错误信息如下：

合约代码 #

address payable public coldStorage;
event toColdStorage (address from, uint256 amount, uint toBlockchain, string toAddress);
event removedFromColdStorage (address to, uint256 amount, uint fromBlockchain, string fromAddress);

function getFromStorage(address payable _to, uint _fromBlockchain, string memory _fromAddress) public payable {
    require(msg.sender == coldStorage, "Only the owners can call this function");
    _to.transfer(msg.value);
    emit removedFromColdStorage(_to, msg.value, _fromBlockchain, _fromAddress);
}

Python调用代码 #

contract.functions.getFromStorage(w3.eth.accounts[2], 2, '9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM').transact({'value':500000000000000000})

错误信息 #

raise ContractLogicError(f'execution reverted: {response["error"]["message"]}')
web3.exceptions.ContractLogicError: execution reverted: VM Exception while processing transaction: revert

排查关键点 #

• 权限校验失败：函数第一行require(msg.sender == coldStorage)是最可能的触发回滚的原因。当前Python代码未指定transact的from字段，默认使用w3.eth.default_account作为交易发起者，需确认该账户是否与合约中coldStorage变量的实际值完全一致。
• 账户余额不足：确认交易发起者（即coldStorage账户）的余额是否足够支付500000000000000000 wei（0.5 ETH），若余额不足，transfer操作会触发回滚。
• 参数类型匹配：检查_fromBlockchain参数类型（合约中为uint，Python传入整数2无问题）；_to参数为address payable，w3.eth.accounts[2]作为标准账户地址默认支持支付，此部分大概率无问题。

内容的提问来源于stack exchange，提问作者ymuhamma