Create file ".env" into "node-js-jwt-auth-mongo" folder. Input
PORT=8080
NODE_ENV=test
SECRET=NULL
EMAIL_NAME=NULL@gmail.com
EMAIL_PASSWORD=NULL
Change EMAIL_NAME and EMAIL_PASSWORD to your own mail. (only @gmail.com)
Create file ".env" into "vue-vuex-jwt-auth" folder. Input
VUE_APP_PORT=8081
Open first terminal and run command
cd node-js-jwt-auth-mongo; npm i; npm start
Open second terminal and run command
cd vue-vuex-jwt-auth; npm i; npm run serve
Then open node-js-jwt-auth-mongo/server.js and comment on lines from 41 to 56 and save file (Ctrl+S).