Solidity coverage showing 0 coverage

Support Contracts
1

Hi!

I created an ERC777 token and used solidity coverage to test it. Unfortunately,the test shows 0 coverage and after it is done, I get the following error:

    > Istanbul reports written to ./coverage/ and ./coverage.json
     > solidity-coverage cleaning up, shutting down ganache server
      Error: while migrating ERC777Token: Returned error: VM Exception 
      while processing transaction: revert
     at 
     /Users/Alex./node_modules/truffle/build/webpack:/packages/deployer/src
    /deployment.js:365:1
    at process._tickCallback (internal/process/next_tick.js:68:7)
   Truffle v5.3.5 (core: 5.3.5)
   Node v10.24.1

Screenshot 2021-05-11 at 13.21.05 1

This is my truffle.js and .solcover.js files:
truffle.js

 module.exports = {
  networks: {


ganache: {
  host: "127.0.0.1",
  port: 8545,
  network_id: "*",
},
 },
 plugins: ["solidity-coverage"],
 // Set default mocha options here, use special reporters etc.
 mocha: {
timeout: 100000
},

 // Configure your compilers
 compilers: {
  solc: {
  version: "0.8.0",    // 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"
  // }
}
},


db: {
enabled: false
 }
};

.solcover.js:

 module.exports = {
port: 8555,
norpc: true,
deepSkip: true,
skipFiles: ['contracts/Migrations.sol']
};

package.json:

     "name": "ERC777Token",
     "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
    "test": "mocha --timeout 20000 -R mocha-multi --reporter-options 
  nyan=-,json=.results.json",
   "coverage": "./node_modules/.bin/solidity-coverage"
  },
   "keywords": [],
    "author": "",
    "license": "ISC",
    "dependencies": {
     "@openzeppelin/test-environment": "^0.1.9",
     "@truffle/hdwallet-provider": "^1.3.1",
    "bn-chai": "^1.0.1",
    "bn.js": "^5.2.0",
"chai-as-promised": "^7.1.1",
"dotenv": "^9.0.1",
"ganache-cli": "^6.12.2",
"mocha": "^8.4.0",
"openzeppelin-solidity": "^4.1.0"
  },
 "devDependencies": {
"@openzeppelin/contracts": "^4.1.0",
"@openzeppelin/test-helpers": "^0.5.11",
"@smartdec/smartcheck": "^2.0.1",
"chai": "^4.3.4",
"coveralls": "^3.1.0",
"solidity-coverage": "^0.8.0-beta.0",
"web3": "^1.3.5"
  }
 }

I tried with : npx truffle run coverage and npx truffle run coverage --network coverage both giving the same error. Am I missing something? This is my github repo in case you want to check it out https://github.com/faustinaedm/ERC777Test.git . Any help would be appreciated!