[ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client

Question

I\'m working with PostgreSQL and NodeJS with its \"PG Module\". CRUD works but sometimes doesn\'t update automatically the views when i save or delete some item. this is my cod

Answer 1

Check res.send() should not call two times.

In Controller

const getAll = function(req, res){
   res.send(service.getAll(req,res));
  }

In Service

const Type = require("../models/type.model.js");
exports.getAll = (req, res) => {
  Type.getAll((err, data) => {  
    res.send(data);
  });
};

Above res.send(data); two-time calling will create a problem. better to use

const getAll = function(req, res){
        service.getAll(req,res);
      }