使用INSUFFICIENT_TX_FEE创建新帐户失败

Question

我一直在使用Hedera和它的Python包装器。几个小时前，我有一个工作的例子，我能够创建一个新的帐户与初始余额。

现在，几个小时后，相同的代码会出现以下错误(Testnet)：

Exception has occurred: JavaException
JVM exception occurred: Hedera transaction `0.0.29467648@1642981813.928678616` failed pre-check with the status `INSUFFICIENT_TX_FEE` com.hedera.hashgraph.sdk.PrecheckStatusException
  File "/home/.../src/utils/hedera.py", line 101, in __init__
    AccountCreateTransaction()
  File "/home/.../src/main.py", line 21, in <module>
    new_account: HederaAccount = HederaAccount(client, initial_balance=100_000)

我一直试图找出根本原因并修复，但到目前为止(官方文档/github/anywhere)没有任何运气。我在GitHub中发现了一些注释，其中提到，当配置客户端的值大于100_000 tinybar时，必须指定最大事务费。我做到了，但还是犯了同样的错误。

这是我用来配置客户端的助手函数：

def get_client(
    account_id: Optional[AccountId] = None, private_key: Optional[PrivateKey] = None
) -> Client:
    logger.debug(f"Hedera::get_client - create account_id")
    _account_id: AccountId = (
        account_id if account_id else Hedera.load_account_from_id()
    )

    logger.debug(f"Hedera::get_client - create account_id")
    private_key: PrivateKey = (
        private_key
        if private_key
        else Hedera.load_private_key(config["account"]["private_key"])
    )

    logger.debug(f"Hedera::get_client - create client")
    client: Client = (
        Client.forTestnet()
        if config["env"] == DeploymentEnv.Development.value
        else Client.forMainnet()
    )

    logger.debug(f"Hedera::get_client - set operator")
    client.setOperator(_account_id, private_key)

    # I just added this line (not required a couple of hours ago), still same error
    client.setMaxTransactionFee(Hbar.fromTinybars(200_000))

    logger.debug(f"Hedera::get_client - client: {client.toString()}")
    return client

这是创建新帐户和抛出错误的类：

class HederaAccount:
    def __init__(
        self,
        client,
        account_id: Optional[AccountId] = None,
        private_key: Optional[PrivateKey] = None,
        initial_balance: Optional[int] = 1_000_000,
    ) -> None:
        self.client: Client = client

        if account_id:
            logger.debug(
                f"HederaAccount::init - existent account id: {account_id.toString()}"
            )

            if not private_key:
                raise Exception(
                    "When loading an existing account, 'private_key' is required"
                )

            self.account_id = account_id
            self.private_key = private_key
            self.public_key = self.private_key.getPublicKey()
            self.node_id: Optional[AccountId] = None

        else:
            self.private_key: PrivateKey = PrivateKey.generate()
            self.public_key: PublicKey = self.private_key.getPublicKey()

            tx_resp: TransactionResponse = (
                AccountCreateTransaction()
                .setKey(self.public_key)
                .setInitialBalance(Hbar.fromTinybars(initial_balance))
                .execute(client)
            )
            self.node_id: AccountId = tx_resp.nodeId

            tx_receipt: TransactionReceipt = tx_resp.getReceipt(self.client)
            self.account_id: AccountId = tx_receipt.accountId

            logger.debug(
                f"HederaAccount::init - new account id: {self.account_id.toString()}"
            )

我就是这样创建/加载我的帐户的：

root_account_id = Hedera.load_account_id()
root_private_key = Hedera.load_private_key()
client = Hedera.get_client(account_id=root_account_id, private_key=root_private_key)

# Load root account (no problems here)
root_account: HederaAccount = HederaAccount(
    client, account_id=root_account_id, private_key=root_private_key
)
logger.info(f"Root account: {root_account}")
logger.info("\n\n")

# Create a new account (Failing here)
new_account: HederaAccount = HederaAccount(client, initial_balance=100_000)
logger.info(f"New account: {new_account}")
logger.info("\n\n")

由于我在测试网中运行代码，我的帐户(root_account)有足够的HBAR来支付创建新帐户(new_account)的费用。

hedera-sdk-py：2.6.0

回购： https://github.com/ccddan/hbar-hello-world/blob/feature/nfts/src/nft.py

欢迎任何提示，包括指向好的 Hedera文档的链接。谢谢!

Answer 1

在撰写本文时，client.setMaxTransactionFee() 的最低金额必须是1 HBAR。在文档中没有明确提到这一点，您不能尝试使用较低的值：

https://docs.hedera.com/guides/getting-started/environment-set-up

医生截图

使用client.setMaxTransactionFee(Hbar(1))更新我的客户端配置后，一切都按预期工作。