weather API keys For api calls you need to replace the value of the key "VUE_APP_OWM_KEY" in the ".env" file with a real key that can be obtained here. For example: VUE_APP_OWM_KEY=*YOUR_API_KEY* Project setup npm install Compiles and hot-reloads for development npm run serve Compiles and minifies for production npm run build Lints and fixes files npm run lint Customize configuration See Configuration Reference.