处理响应错误：方法eth_sendTransaction不存在

Question

我正在使用 Infura，我想使用 web3 创建一个事务，但是我遇到了一个错误。

这是我的交易执行代码：

async approve(marketAddress, tokenId){
        const abi = store.state.contract.nftAbi;
        const provider = new Web3.providers.HttpProvider(process.env.VUE_APP_INFURA_NETWORK);
        const web3 = new Web3(provider);
       
        const contract_Address = process.env.VUE_APP_INFURA_NFT_CONTRACT;
        const nft = new web3.eth.Contract(abi, contract_Address);

        const deployer = process.env.VUE_APP_DEPLOYER_ADDRESS;
        const privateKey = process.env.VUE_APP_DEPLOYER_PRIVATE_KEY.replace('0x','');
        let block = await web3.eth.getBlock("latest");
        let gasLimit = Math.ceil((block.gasLimit/block.transactions.length))
        const tx = {
            nonce: web3.eth.getTransactionCount(deployer),
            from: deployer,
            to: contract_Address,
            gasLimit: web3.utils.toHex(gasLimit),
            gas:web3.utils.toHex(await web3.eth.getGasPrice()),
            value: web3.utils.toHex('0'),
            data: nft.methods.approve(marketAddress, tokenId).encodeABI()
        }
        const signature = await web3.eth.accounts.signTransaction(tx, privateKey)
        await web3.eth.sendSignedTransaction(signature.rawTransaction).on(
            "receipt",async()=>{}
        )
    }

这是我收到的错误：

processing response error (body="{\"jsonrpc\":\"2.0\",\"id\":103,\"error\":{\"code\":-32601,\"message\":\"The method eth_sendTransaction does not exist/is not available\"}}", error={"code":-32601}, requestBody="{\"method\":\"eth_sendTransaction\",\"params\":[{\"gas\":\"0x2cd60\",\"value\":\"0x3782dace9d90000\",\"from\":\"0x0979d47351933bbfea0891c6cb94748b6d975aa5\",\"to\":\"0x8d17b0c4924cc1ab42ac4ba4dbb20dbe2e97a78c\",\"data\":\"0x243adbdd0000000000000000000000000000000000000000000000000000000000000001\"}],\"id\":103,\"jsonrpc\":\"2.0\"}", requestMethod="POST", url="https://sepolia.infura.io/v3/4d7d800d984c4d4f83e2fe1a5fcf1245", code=SERVER_ERROR, version=web/5.7.1)
    at p.makeError (index.ts:269:28)
    at p.throwError (index.ts:281:20)
    at index.ts:341:28
    at Generator.next (<anonymous>)
    at o (chunk-vendors.f2ce1fb5.js:2:470559)

为什么会出现此错误，我该如何解决？