nodecors

 https://stackoverflow.com/questions/57009371/access-to-xmlhttprequest-at-from-origin-localhost3000-has-been-blocked

if you are building your rest api in nodejs. Follow the folowing simple steps

Stop the Node.js server.

npm install cors --save

Add following lines to your server.js or index.js

var cors = require('cors')

app.use(cors()) // Use this after the variable declaration

Now try to make your api call on the client side and it should work

related to package.json error:

Cannot find schema for package.json · Issue #138459 · microsoft/vscode · GitHub

"scripts": {

    "start":"nodemon app.js",

    

  },