REST CORS Errors

//set header to remove cross request error
app.use((req,res,next)=>{
    res.setHeader('Access-Control-Allow-Origin', '*');
    res.setHeader('Access-Control-Allow-Methods', 'GET', 'POST', 'PUT','PATCH','DELETE');
    res.setHeader('Access-Control-Allow-Headers',  'Content-Type','Authorization');
    next();
})