I'm trying to develop DApp on polygon blockchain. Basically I'm minting NFT but after few mints I get this error. It even happens when I don't mint NFT. Here is my code.
const Web3 = require("web3")
const fs = require("fs")
var HDWalletProvider = require("@truffle/hdwallet-provider");
var provider = new HDWalletProvider(SECRET_PHRASE, "https://rpc-mumbai.maticvigil.com")
const web3 = new Web3(provider)
const constractJSON = JSON.parse(fs.readFileSync(`${process.cwd()}/contracts/Collection.json`))
const abi = constractJSON["abi"]
const byteCode = constractJSON["byteCode"]["object"]
const mintNFT = async (contractAddress,tokenURI,to) => {
const contract = await new web3.eth.Contract(abi, contractAddress)
const result = await contract.methods.claimItem(tokenURI,to).send({from: WALLET_ADDRESS,gasLimit:6000000},)
}
module.exports = mintNFT
Here is the full Error.
mint_service_1 | /usr/src/app/node_modules/safe-event-emitter/index.js:74
mint_service_1 | throw err
mint_service_1 | ^
mint_service_1 |
mint_service_1 | Error: PollingBlockTracker - encountered an error while attempting to update latest block:
mint_service_1 | undefined
mint_service_1 | at PollingBlockTracker._performSync (/usr/src/app/node_modules/eth-block-tracker/src/polling.js:51:24)
mint_service_1 | at processTicksAndRejections (node:internal/process/task_queues:96:5)
mint_service_1 | Emitted 'error' event on Web3ProviderEngine instance at:
mint_service_1 | at safeApply (/usr/src/app/node_modules/safe-event-emitter/index.js:70:5)
mint_service_1 | at PollingBlockTracker.SafeEventEmitter.emit (/usr/src/app/node_modules/safe-event-emitter/index.js:56:5)
mint_service_1 | at PollingBlockTracker._performSync (/usr/src/app/node_modules/eth-block-tracker/src/polling.js:53:16)
mint_service_1 | at processTicksAndRejections (node:internal/process/task_queues:96:5)
I got the same issue. You can see the error log below
const newErr = new Error(`PollingBlockTracker - encountered an error while attempting to update latest block:\n${err.stack}`)
^
Error: PollingBlockTracker - encountered an error while attempting to update latest block:
undefined
at PollingBlockTracker._performSync (/Users/buuthongtran/Downloads/FlightSurety/node_modules/eth-block-tracker/src/polling.js:51:24)
at processTicksAndRejections (internal/process/task_queues.js:95:5)
npm ERR! Test failed. See above for more details.
I found out I forgot to launch Ganache before running truffle test, so I tried launching Ganache and input the right mnemonic and port. The issue went away after that.