Migration to mumbai is failing - migration

Question

I'm a newbie, and I'm currently trying to migrate a contract to mumbai from my Mac, but something is wrong. Could you please let me know identify what it is. I tried several methods, such as init truffle, but the outcome is different. It should work with truffle migrate —network mumbai --reset. When I try that, I get the following error:
VSC error
Please take a look at my truffle-config.js
* Use this file to configure your truffle project. It's seeded with some
* common settings for different networks and features like migrations,
* compilation, and testing. Uncomment the ones you need or modify
* them to suit your project as necessary.
*
* More information about configuration can be found at:
*
* https://trufflesuite.com/docs/truffle/reference/configuration
*
* To deploy via Infura you'll need a wallet provider (like #truffle/hdwallet-provider)
* to sign your transactions before they're sent to a remote public node. Infura accounts
* are available for free at: infura.io/register.
*
* You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
* public/private key pairs. If you're publishing your code to GitHub make sure you load this
* phrase from a file you've .gitignored so it doesn't accidentally become public.
*
*/
const HDWalletProvider = require('#truffle/hdwallet-provider');
//const infuraKey = "fj4jll3k.....";
//
const fs = require('fs');
const mnemonic = fs.readFileSync(".firefox.log").toString().trim();
module.exports = {
/**
* Networks define how you connect to your ethereum client and let you set the
* defaults web3 uses to send transactions. If you don't specify one, it will
* will spin up a development blockchain for you on port 9545 when you run
* run `develop` or `test`. You can ask a blockchain for its default network
* network from the command line, e.g.
*
* $ truffle test --network <network-name>
*/
networks: {
// Useful for testing. The `development` name is special - truffle uses it by default
// if it's defined here and no other network is specified at the command line.
// You should run a client (like ganache-cli or geth) in a separate terminal
// tab if you use this network and you must also set the `host`, `port` and
// options below to some value.
//
development: {
host: "127.0.0.1",
port: 7545,
network_id: "*"
},
// Another network with more advanced options...
// advanced: {
// port: 8777, // Custom port
// network_id: 1342, // Custom network
// gas: 8500000, // Gas sent with each transaction (default: ~6700000)
// gasPrice: 20000000000, // 20 gwei (in wei) (default: 100 gwei)
// from: <address>, // Account to send txs from (default: accounts[0])
// websockets: true // Enable EventEmitter interface for web3 (default: false)
// },
// Useful for deploying to a public network.
// NB: It's important to wrap the provider as a function.
ropsten: {
provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/8ba19657db694241aef195cd24ccbbbb`),
network_id: 3, // Ropsten's id
gas: 8000000, // Ropsten has a lower block limit than mainnet
gasPrice: 25000000000,
confirmations: 2, // # of confirmations before a transaction is considered mined
timeoutBlocks: 200, // # of blocks before a deployment times out - was 200
skipDryRun: true // Skip dry run before migrations? (default: false for public nets )
},
goerli: {
provider: () => new HDWalletProvider(mnemonic, `https://goerli.infura.io/v3/8ba19657db694241aef195cd24ccbbbb`),
network_id: 5, // goerli's id
gas: 15500000, // Ropsten has a lower block limit than mainnet
confirmations: 2, // # of confs to wait between deployments. (default: 0)
timeoutBlocks: 200, // # of blocks before a deployment times out - was 200
skipDryRun: true // Skip dry run before migrations? (default: false for public nets )
},
mumbai: {
provider: function () {
return new HDWalletProvider(mnemonic, `https://matic-mumbai.chainstacklabs.com`);
//return new HDWalletProvider(mnemonic, `https://polygon-mumbai.infura.io/v3/8ba19657db694241aef195cd24ccbbbb`);
},
network_id: 80001,
gas: 5500000,
gasPrice: 40000000000,
confirmations: 2,
networkCheckTimeout: 999999,
skipDryRun: true
}
// Useful for private networks
// private: {
// provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
// network_id: 2111, // This network is yours, in the cloud.
// production: true // Treats this network as if it was a public network. (default: false)
// }
},
// Set default mocha options here, use special reporters etc.
mocha: {
// timeout: 100000
},
// Configure your compilers
compilers: {
solc: {
version: "0.7.6", // Fetch exact version from solc-bin (default: truffle's version)
// docker: true, // Use "0.5.1" you've installed locally with docker (default: false)
settings: { // See the solidity docs for advice about optimization and evmVersion
optimizer: {
enabled: false,
runs: 200
},
//evmVersion: "byzantium"
}
}
}
}
And this is my package.json
"name": "uniswap-core",
"version": "1.0.0",
"description": "",
"main": "truffle-config.js",
"dependencies": {
"#truffle/hdwallet-provider": "^1.5.1",
"cpr": "^3.0.1",
"dotenv": "^10.0.0",
"fs": "^0.0.1-security",
"web": "1.5.0"
}
} ```