TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')

[EddiePumpin]

const { deployments, ethers, getNamedAccounts } = require("hardhat")
const { assert } = require("chai")

describe("FundMe", async function () {
    let fundMe
    let deployer
    let mockV3Aggregator
    beforeEach(async function () {
        // deploy our fundme contract using Hardhat deploy
        const deployer = await getNamedAccounts()
        // deployer = (await getNamedAccounts()).deployer
        await deployments.fixture(["all"]) // 'fixture' allows us to run the entire deploy folder as many tags as we want
        fundMe = await ethers.getContact("FundMe", deployer) // getContract get the most recent deployment of whatever contract we tell it.
        mockV3Aggregator = await ethers.getContract(
            "MockV3Aggregator",
            deployer,
        )
    })

    //
    describe("constructor", function () {
        it("sets the aggregator addresses correctly", async function () {
            const response = await fundMe.getpriceFeed()
            assert.equal(response, mockV3Aggregator.address)
        })
    })
})

I got this error message() TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider') when trying to test these lines of code.

[HarigovindM-G]

This TypeError: Cannot read properties of undefined(reading 'JsonRpcProvider') error is generally thrown due to some stability issues with ethers v6, could you check your packages.json and if its some version above 6 , you could try down grading to a more stable version like 5.7.2 , you can do that by yarn add ethers@5.7.2. If doesnt solve the problem just tell me , we will try to figure it out .

[EddiePumpin]

I have tried it, it doesn't work

[HarigovindM-G]

could you try copy and pasting the package.json file from the github repo and run yarn install

[EddiePumpin]

{
  "name": "hardhat-fund-me-fcc",
  "devDependencies": {
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
    "@nomiclabs/hardhat-etherscan": "^3.0.0",
    "@nomiclabs/hardhat-waffle": "^2.0.2",
    "chai": "^4.3.4",
    "ethereum-waffle": "^3.4.0",
    "ethers": "^5.5.3",
    "hardhat": "^2.8.3",
    "hardhat-deploy": "^0.9.29",
    "hardhat-gas-reporter": "^1.0.7",
    "solidity-coverage": "^0.7.18",
    "@chainlink/contracts": "^0.3.1",
    "dotenv": "^14.2.0",
    "prettier-plugin-solidity": "^1.0.0-beta.19",
    "solhint": "^3.3.7"
  },
  "scripts": {
    "test": "hardhat test",
    "test:staging": "hardhat test --network sepolia",
    "lint": "solhint 'contracts/**/*.sol'",
    "lint:fix": "solhint 'contracts/**/*.sol' --fix",
    "format": "prettier --write .",
    "coverage": "hardhat coverage"
  }
}

[EddiePumpin]

I got this

$ yarn hardhat test
yarn run v1.22.22
warning package.json: No license field
warning ..\package.json: No license field
$ "C:\Users\HP FOLIO.vscode\hardhat-fund-me-fcc\node_modules.bin\hardhat" test

0 passing (51ms)

Done in 9.21s.

HP FOLIO@EddiePumpin MINGW64 ~/.vscode/hardhat-fund-me-fcc (main)

[HarigovindM-G]

could you just drop me your package.json