Update package.json

nuxt.config.js

@@ -1,4 +1,5 @@
 const pkg = require('./package')
+require('dotenv').config()
 
 module.exports = {
   mode: 'universal',

package.json

@@ -11,7 +11,6 @@
     "generate": "nuxt generate",
     "lint": "eslint --ext .js,.vue --ignore-path .gitignore .",
     "precommit": "npm run lint",
-    "heroku-postbuild": "npm run build",
     "heroku-postbuild": "npm install --only=dev --no-shrinkwrap && npm run build"
   },
   "dependencies": {