Broccoli Plugin permission error, nodejs

I am getting a build error when trying to run a node.js app on Ubuntu (run as Guest OS on Windows 10). How do I solve the permission error below?

Build error

The Broccoli Plugin: [BroccoliMergeTrees] failed with:

Error: EACCES: permission denied, mkdir '/<PROJECT_FOLDER>/tmp'
    at Error (native)
    at Object.fs.mkdirSync (fs.js:842:18)
    at findBaseDir (/<PROJECT_FOLDER>/node_modules/quick-temp/index.js:62:8)
    at makeTmpDir (/<PROJECT_FOLDER>/node_modules/quick-temp/index.js:45:41)
    at Object.makeOrReuse (/<PROJECT_FOLDER>/node_modules/quick-temp/index.js:21:22)
    at new ReadCompat (/<PROJECT_FOLDER>/node_modules/broccoli-plugin/read_compat.js:17:13)
    at BroccoliMergeTrees.Plugin._initializeReadCompat (/<PROJECT_FOLDER>/node_modules/broccoli-plugin/index.js:130:22)
    at BroccoliMergeTrees.Plugin.read (/<PROJECT_FOLDER>/node_modules/broccoli-plugin/index.js:110:12)
    at /<PROJECT_FOLDER>/node_modules/ember-cli-broccoli/lib/builder.js:107:23
    at lib$rsvp$$internal$$tryCatch (/<PROJECT_FOLDER>/node_modules/rsvp/dist/rsvp.js:1036:16)

The broccoli plugin was instantiated at: 
    at BroccoliMergeTrees.Plugin (/<PROJECT_FOLDER>/node_modules/broccoli-plugin/index.js:7:31)
    at new BroccoliMergeTrees (/<PROJECT_FOLDER>/node_modules/broccoli-merge-trees/index.js:29:10)
    at BroccoliMergeTrees (/<PROJECT_FOLDER>/node_modules/broccoli-merge-trees/index.js:23:53)
    at Class.module.exports.postprocessTree (/<PROJECT_FOLDER>/node_modules/broccoli-serviceworker/lib/ember-addon.js:62:14)
    at /<PROJECT_FOLDER>/node_modules/ember-cli/lib/broccoli/ember-app.js:506:27
    at Array.forEach (native)
    at EmberApp.addonPostprocessTree (/<PROJECT_FOLDER>/node_modules/ember-cli/lib/broccoli/ember-app.js:504:23)
    at EmberApp.toTree (/<PROJECT_FOLDER>/node_modules/ember-cli/lib/broccoli/ember-app.js:1591:15)
    at module.exports (/<PROJECT_FOLDER>/ember-cli-build.js:36:16)
    at Class.module.exports.Task.extend.setupBroccoliBuilder (/<PROJECT_FOLDER>/node_modules/ember-cli/lib/models/builder.js:55:19)