React + Express: Proxy Error: Could Not Proxy Request /total From Localhstem_errors

This is a follow-up question from my previous question React.js: Axois Post stay on pending(but i am getting data) My package.json file { 'name': 'my-app', 'version': '0.1.0',

Solution 1:

Can you try setting your proxy in package.json like

"proxy":{"/*":{"target":"http://localhost:3001"}}

Regarding below error the res.sendStatus should be placed out of mongo connection

Can't set headers after they are sent

MongoClient.connect(url, { useNewUrlParser: true }, function(err, db) { 
   if (err) throw err; 
   var dbo = db.db("cart"); 
   var objs = req.body; 
   dbo.collection("items").insertMany(objs, function(err, result) { 
   if (err) console.log(err); 
   console.log("Number of documents inserted: " + result.insertedCount); 
   db.close() 
   }); 
}); 
   res.sendStatus(200) 
});