title: The "path" argument must be of type string. Received undefined. not sure why?
body: <p>I am trying to run my react project and I keep getting this error.
  I have reinstalled node and npm, and still this issue persists.
  wondering what to do next!</p>
  
  <p>Enclosed, is package.json, hope it will shed some light.</p>
  
  <p>I copied from my github repository the project that was there and I was still getting this error.</p>
  
  <pre><code>{
    "name": "our-family-client",
    "version": "0.1.0",
    "private": true,
    "dependencies": {
      "@blueprintjs/core": "^3.22.3",
      "bootstrap": "^4.3.1",
      "react": "^16.11.0",
      "react-autosuggest": "^9.4.3",
      "react-bootstrap": "^1.0.0-beta.14",
      "react-dom": "^16.11.0",
      "react-grid-gallery": "^0.5.5",
      "react-redux": "^7.1.1",
      "react-router-dom": "^5.1.2",
      "react-scripts": "^3.4.1",
      "reactstrap": "^8.1.1",
      "redux": "^4.0.4",
      "redux-devtools-extension": "^2.13.8",
      "redux-thunk": "^2.3.0"
    },
    "scripts": {
      "start": "react-scripts start",
      "build": "react-scripts build",
      "test": "mocha",
      "eject": "react-scripts eject"
    },
    "eslintConfig": {
      "extends": "react-app"
    },
    "browserslist": {
      "production": [
        "&gt;0.2%",
        "not dead",
        "not op_mini all"
      ],
      "development": [
        "last 1 chrome version",
        "last 1 firefox version",
        "last 1 safari version"
      ]
    },
    "devDependencies": {
      "@typescript-eslint/eslint-plugin": "^1.13.0",
      "@typescript-eslint/parser": "^1.13.0",
      "chai": "^4.2.0",
      "mocha": "^7.0.0",
      "noop-service-worker-middleware": "^3.0.0"
    }
  }
  
  </code></pre>
  
  <pre><code>
  TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
      at validateString (internal/validators.js:117:11)
      at Object.join (path.js:1039:7)
      at noopServiceWorkerMiddleware (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/react-dev-utils/noopServiceWorkerMiddleware.js:14:26)
      at Layer.handle [as handle_request] (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/layer.js:95:5)
      at trim_prefix (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:317:13)
      at /Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:284:7
      at Function.process_params (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:335:12)
      at next (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:275:10)
      at launchEditorMiddleware (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/react-dev-utils/errorOverlayMiddleware.js:20:7)
      at Layer.handle [as handle_request] (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/layer.js:95:5)
      at trim_prefix (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:317:13)
      at /Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:284:7
      at Function.process_params (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:335:12)
      at next (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/index.js:275:10)
      at handleWebpackInternalMiddleware (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/react-dev-utils/evalSourceMapMiddleware.js:42:7)
      at Layer.handle [as handle_request] (/Users/saraginsburg/FlatIron/our-family/our-family-frontend/node_modules/express/lib/router/layer.js:95:5)
  </code></pre>