opensea-js: Error: Unsupported Protocol

I am getting Error: Unsupported Protocol when attempting to fulfillOrder.

SDK version: 4.0.12

this.openseaSDK = new OpenSeaSDK(this.walletProvider, {
    networkName: Network.Main,
    apiKey: 'API-KEY'
});

const order = await this.openseaSDK.api.getOrder({
                side: "ask",
                assetContractAddress: this.contractAddress,
                tokenId: tokenId
            })

this.openseaSDK.fulfillOrder({
    order,
    accountAddress
});

Here is an example of the order object I am getting:

{
  "createdDate": "2023-03-04T19:00:25.651939",
  "closingDate": "2023-03-04T20:59:27",
  "listingTime": 1677956367,
  "expirationTime": 1677963567,
  "orderHash": "0x75a6473ffc8a8944ac0f831a644a1835527563506d6a28c8bf0a921a67e82fb9",
  "maker": {
    "address": "0xe8697df4bdac272c94abb99104691670cbb66142",
    "config": "",
    "profileImgUrl": "https://storage.googleapis.com/opensea-static/opensea-profile/20.png",
    "user": {}
  },
  "taker": null,
  "protocolData": {
    "parameters": {
      "offerer": "0xe8697df4bdac272c94abb99104691670cbb66142",
      "offer": [
        {
          "itemType": 2,
          "token": "0xED5AF388653567Af2F388E6224dC7C4b3241C544",
          "identifierOrCriteria": "5238",
          "startAmount": "1",
          "endAmount": "1"
        }
      ],
      "consideration": [
        {
          "itemType": 0,
          "token": "0x0000000000000000000000000000000000000000",
          "identifierOrCriteria": "0",
          "startAmount": "14735950000000000000",
          "endAmount": "14735950000000000000",
          "recipient": "0xe8697dF4BdAC272C94Abb99104691670CBb66142"
        },
        {
          "itemType": 0,
          "token": "0x0000000000000000000000000000000000000000",
          "identifierOrCriteria": "0",
          "startAmount": "74050000000000000",
          "endAmount": "74050000000000000",
          "recipient": "0xB4D24DAcbdFfA1BBf9A624044484b3FEeB7fdF74"
        }
      ],
      "startTime": "1677956367",
      "endTime": "1677963567",
      "orderType": 0,
      "zone": "0x004C00500000aD104D7DBd00e3ae0A5C00560C00",
      "zoneHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "salt": "0x360c6ebe0000000000000000000000000000000000000000a33a881460dd1edd",
      "conduitKey": "0x0000007b02230091a7ed01230072f7006a004d60a8d4e71d599b8104250f0000",
      "totalOriginalConsiderationItems": 2,
      "counter": 0
    },
    "signature": "0x7aa38bf4edd301fe08cde55374a8a166deab1630cb5ead5a3707aa452da8155f4cbe340dea5e1f3c22e29ba825214adf57583cdf3c36f38650c7a692191c17f5"
  },
  "protocolAddress": "0x00000000000001ad428e4906ae43d8f9852d0dd6",
  "currentPrice": "14810000000000000000",
  "makerFees": [
    {
      "account": {
        "address": "0xb4d24dacbdffa1bbf9a624044484b3feeb7fdf74",
        "config": "",
        "profileImgUrl": "https://storage.googleapis.com/opensea-static/opensea-profile/14.png",
        "user": null
      },
      "basisPoints": "50"
    }
  ],
  "takerFees": [],
  "side": "ask",
  "orderType": "basic",
  "cancelled": false,
  "finalized": false,
  "markedInvalid": false,
  "clientSignature": "0x7aa38bf4edd301fe08cde55374a8a166deab1630cb5ead5a3707aa452da8155f4cbe340dea5e1f3c22e29ba825214adf57583cdf3c36f38650c7a692191c17f5",
  "makerAssetBundle": {
    "maker": null,
    "assets": [
      {
        "tokenId": "5238",
        "tokenAddress": "0xed5af388653567af2f388e6224dc7c4b3241c544",
        "name": "Azuki #5238",
        "description": null,
        "owner": null,
        "assetContract": {
          "name": "Azuki",
          "description": "Take the red bean to join the garden. View the collection at [azuki.com/gallery](https://azuki.com/gallery).\r\n\r\nAzuki starts with a collection of 10,000 avatars that give you membership access to The Garden: a corner of the internet where artists, builders, and web3 enthusiasts meet to create a decentralized future. Azuki holders receive access to exclusive drops, experiences, and more. Visit [azuki.com](https://azuki.com) for more details.\r\n\r\nWe rise together. We build together. We grow together.",
          "type": "non-fungible",
          "schemaName": "ERC721",
          "address": "0xed5af388653567af2f388e6224dc7c4b3241c544",
          "tokenSymbol": "AZUKI",
          "buyerFeeBasisPoints": 0,
          "sellerFeeBasisPoints": 500,
          "openseaBuyerFeeBasisPoints": 0,
          "openseaSellerFeeBasisPoints": 0,
          "devBuyerFeeBasisPoints": 0,
          "devSellerFeeBasisPoints": 500,
          "imageUrl": "https://i.seadn.io/gae/H8jOCJuQokNqGBpkBN5wk1oZwO7LM8bNnrHCaekV2nKjnCqw6UB5oaH8XyNeBDj6bA_n1mjejzhFQUP3O1NfjFLHr3FOaeHcTOOT?w=500&auto=format",
          "externalLink": "http://www.azuki.com"
        },
        "collection": {
          "createdDate": null,
          "name": "Azuki",
          "description": "Take the red bean to join the garden. View the collection at [azuki.com/gallery](https://azuki.com/gallery).\r\n\r\nAzuki starts with a collection of 10,000 avatars that give you membership access to The Garden: a corner of the internet where artists, builders, and web3 enthusiasts meet to create a decentralized future. Azuki holders receive access to exclusive drops, experiences, and more. Visit [azuki.com](https://azuki.com) for more details.\r\n\r\nWe rise together. We build together. We grow together.",
          "slug": "azuki",
          "hidden": false,
          "featured": false,
          "featuredImageUrl": null,
          "displayData": {
            "card_display_style": "contain"
          },
          "paymentTokens": [],
          "openseaBuyerFeeBasisPoints": 0,
          "openseaSellerFeeBasisPoints": 0,
          "devBuyerFeeBasisPoints": 0,
          "devSellerFeeBasisPoints": 500,
          "payoutAddress": "0xb4d24dacbdffa1bbf9a624044484b3feeb7fdf74",
          "imageUrl": "https://i.seadn.io/gae/H8jOCJuQokNqGBpkBN5wk1oZwO7LM8bNnrHCaekV2nKjnCqw6UB5oaH8XyNeBDj6bA_n1mjejzhFQUP3O1NfjFLHr3FOaeHcTOOT?w=500&auto=format",
          "largeImageUrl": null,
          "externalLink": "http://www.azuki.com",
          "wikiLink": null,
          "fees": {
            "openseaFees": {},
            "sellerFees": {}
          }
        },
        "orders": null,
        "sellOrders": null,
        "buyOrders": null,
        "imageUrl": "https://i.seadn.io/gcs/files/4aab114dbc77ebfc3857a355034c8122.png?w=500&auto=format",
        "imagePreviewUrl": "https://i.seadn.io/gcs/files/4aab114dbc77ebfc3857a355034c8122.png?w=500&auto=format",
        "imageUrlOriginal": "ipfs://QmYDvPAXtiJg7s8JdRBSLWdgSphQdac8j1YuQNNxcGE1hg/5238.png",
        "imageUrlThumbnail": "https://i.seadn.io/gcs/files/4aab114dbc77ebfc3857a355034c8122.png?w=500&auto=format",
        "externalLink": null,
        "openseaLink": "https://opensea.io/assets/ethereum/0xed5af388653567af2f388e6224dc7c4b3241c544/5238",
        "numSales": 41,
        "lastSale": null,
        "backgroundColor": null,
        "transferFee": null,
        "transferFeePaymentToken": null
      }
    ],
    "name": null,
    "slug": null,
    "description": null,
    "externalLink": null,
    "permalink": null,
    "sellOrders": null
  },
  "takerAssetBundle": {
    "maker": null,
    "assets": [
      {
        "tokenId": "0",
        "tokenAddress": "0x0000000000000000000000000000000000000000",
        "name": "Ether",
        "description": "",
        "owner": null,
        "assetContract": {
          "name": "Ether",
          "description": "This is the collection of owners of Ether",
          "type": "fungible",
          "schemaName": "ERC20",
          "address": "0x0000000000000000000000000000000000000000",
          "tokenSymbol": "ETH",
          "buyerFeeBasisPoints": 0,
          "sellerFeeBasisPoints": 50,
          "openseaBuyerFeeBasisPoints": 0,
          "openseaSellerFeeBasisPoints": 50,
          "devBuyerFeeBasisPoints": 0,
          "devSellerFeeBasisPoints": 0,
          "imageUrl": null,
          "externalLink": null
        },
        "collection": {
          "createdDate": null,
          "name": "Ether",
          "description": "This is the collection of owners of Ether",
          "slug": "ether",
          "hidden": true,
          "featured": false,
          "featuredImageUrl": null,
          "displayData": {},
          "paymentTokens": [],
          "openseaBuyerFeeBasisPoints": 0,
          "openseaSellerFeeBasisPoints": 50,
          "devBuyerFeeBasisPoints": 0,
          "devSellerFeeBasisPoints": 0,
          "payoutAddress": null,
          "imageUrl": null,
          "largeImageUrl": null,
          "externalLink": null,
          "wikiLink": null,
          "fees": {
            "openseaFees": {},
            "sellerFees": {}
          }
        },
        "orders": null,
        "sellOrders": null,
        "buyOrders": null,
        "imageUrl": "https://openseauserdata.com/files/6f8e2979d428180222796ff4a33ab929.svg",
        "imagePreviewUrl": "https://openseauserdata.com/files/6f8e2979d428180222796ff4a33ab929.svg",
        "imageUrlOriginal": "https://openseauserdata.com/files/6f8e2979d428180222796ff4a33ab929.svg",
        "imageUrlThumbnail": "https://openseauserdata.com/files/6f8e2979d428180222796ff4a33ab929.svg",
        "externalLink": null,
        "openseaLink": "https://opensea.io/assets/ethereum/0x0000000000000000000000000000000000000000/0",
        "numSales": 2,
        "lastSale": null,
        "backgroundColor": null,
        "transferFee": null,
        "transferFeePaymentToken": null
      }
    ],
    "name": null,
    "slug": null,
    "description": null,
    "externalLink": null,
    "permalink": null,
    "sellOrders": null
  }
}