The method eth_sendTransaction does not exist/is not available...

Trying to fulfill an order:

import Web3 from "web3"; import { OpenSeaPort, Network } from "opensea-js";

const provider = new Web3.providers.HttpProvider( "https://rinkeby.infura.io/v3/aRxxxxxxxxxxxxxxxxxx" );

const seaport = new OpenSeaPort(provider, { networkName: Network.Rinkeby, apiKey: "xxxxxxxxxxxxxxxxxx", });

const collectionAddress = "0xafc3cd70db252e17bbcc6ff9575cdd63514576k8"; const testedTokenId = 1;

const openSeaAsset = await seaport.api.getAsset({ tokenAddress: collectionAddress, tokenId: testedTokenId, });

const makerWalletAddress = openSeaAsset.owner.address; const order = await seaport.api.getOrder({ asset_contract_address: collectionAddress, token_id: testedTokenId, side: 1, maker: makerWalletAddress, sale_kind: 0, });

const myWalletAddress = "0xCxxxxxxxxxxxxxxxxxxxx"; await seaport.fulfillOrder({ order: order, accountAddress: myWalletAddress, });

I’m able to get results for getAsset, getOrder, etc. However when trying to fulfillOrder, I get this error message:

/Users/noam/Documents/Code/OpenseaSdk/node_modules/opensea-js/lib/seaport.js:3012 throw new Error("Failed to authorize transaction: \"" + (error_14.message

Error: Failed to authorize transaction: "The method eth_sendTransaction does not exist/is not available..." at OpenSeaPort.<anonymous> (/Users/noam/Documents/Code/OpenseaSdk/node_modules/opensea-js/lib/seaport.js:3012:31) at step (/Users/noam/Documents/Code/OpenseaSdk/node_modules/opensea-js/lib/seaport.js:44:23) at Object.throw (/Users/noam/Documents/Code/OpenseaSdk/node_modules/opensea-js/lib/seaport.js:25:53) at rejected (/Users/noam/Documents/Code/OpenseaSdk/node_modules/opensea-js/lib/seaport.js:17:65)

Read somewhere that Infura doesn’t support sendTransaction. Not sure about it. Any idea how to solve this? Sorry for the format- I’m new here…

[trivonhan]

const BASE_DERIVATION_PATH = `44'/60'/0'/0`;

    const mnemonicWalletSubprovider = new MnemonicWalletSubprovider({
      mnemonic: process.env.MNEMONIC,
      baseDerivationPath: BASE_DERIVATION_PATH,
    });
    const network = process.env.NETWORK;
    // const infuraRpcSubprovider = new RPCSubprovider({
    //   rpcUrl: 'https://goerli.infura.io/v3/8dd136f853ad4374babb7cfde0608001',
    // });

    const providerEngine = new Web3ProviderEngine();
    providerEngine.addProvider(mnemonicWalletSubprovider);
    providerEngine.addProvider(
      new RpcSubprovider({
        rpcUrl: 'https://goerli.infura.io/v3/8dd136f853ad4374babb7cfde0608001',
      }),
    );
    providerEngine.start();

    // const web3 = new Web3(
    //   // 'https://eth-goerli.g.alchemy.com/v2/JPdx9QoD-rht-Uz4QrrhIn6QYQqlf6PU',
    //   'https://goerli.infura.io/v3/8dd136f853ad4374babb7cfde0608001',
    // );
    // const account = await web3.eth.accounts.wallet.add(process.env.PRIVATE_KEY);
    // console.log('account', account);
    // console.log('web3.eth.accounts', web3.eth.accounts);

    // const provider = web3.currentProvider;

    // console.log('provider', provider);
    const openseaSDK = new OpenSeaSDK(providerEngine, {
      networkName: Network.Goerli,
    });

    // console.log('openseaSDK', openseaSDK);

    const assetBalance = await openseaSDK.getAssetBalance({
      accountAddress: '0x5C845F19EB923eEE213b620c12cc6D1d4E6E3506',
      asset: {
        tokenId: '0',
        tokenAddress: '0x1BAC1C2c2d23FcDaE91d63ff41a84f9F1c1C8aBF',
      },
    });
    console.log('assetBalance', assetBalance);

    const tokenBalance = await openseaSDK.getTokenBalance({
      accountAddress: '0x5C845F19EB923eEE213b620c12cc6D1d4E6E3506',
      tokenAddress: '0x1BAC1C2c2d23FcDaE91d63ff41a84f9F1c1C8aBF',
    });
    console.log('tokenBalance', tokenBalance);

    const getFungibleTokens = await openseaSDK.getFungibleTokens({
      symbol: 'ETH',
      address: '0xFfb99f4A02712C909d8F7cC44e67C87Ea1E71E83',
      name: 'Ethereum',
    });
    console.log('getFungibleTokens', getFungibleTokens);

    const expirationTime = Math.round(Date.now() / 1000 + 60 * 60 * 24);
    const createSellOrder = await openseaSDK.createSellOrder({
      asset: {
        tokenId: '0',
        tokenAddress: '0x1BAC1C2c2d23FcDaE91d63ff41a84f9F1c1C8aBF',
      },
      accountAddress: '0x5C845F19EB923eEE213b620c12cc6D1d4E6E3506',
      startAmount: 3,
      endAmount: 0.1,
      expirationTime,
    });
    console.log('createSellOrder', createSellOrder);
  }

I use you example but I also get error. I think you example is outdated. Here is my output

DEPRECATED: Please use providerUtils.standardizeOrThrow() instead
DEPRECATED: Please use providerUtils.standardizeOrThrow() instead
assetBalance 1
tokenBalance 2
DEPRECATION NOTICE: Use `api.getPaymentTokens` instead
getFungibleTokens []
UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "#<Object>".

Can you give my newer solution? @esteban-OpenSea

[esteban-OpenSea]

This issue has been solved, since you are calling from client side please follow this guidance: https://github.com/ProjectOpenSea/opensea-js/issues/344#issuecomment-1020570900

@HagosAlema , I recommend you go through the opensea tutorial: https://docs.opensea.io/docs/developer-tutorials