Node js error

Node js throw error

FactoryController.prototype.create = function (callback) {
    //The throw is working, and the exception is returned.
    throw new Error('An error occurred'); //outside callback 
    try {
        this.check(function (check_result) {
            callback(check_result);
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

FactoryController.prototype.create = function (callback) {
    try {
        this.check(function (check_result) {
            //The throw is not working on this case to return the exception to the caller(parent)
            throw new Error('An error occurred'); //inside callback 
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

Source: stackoverflow.com

Node js error

TypeError: res.send is not a function    at C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\app.js:6:9    at Layer.handle [as handle_request] (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\layer.js:95:5)    at next (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\route.js:137:13)    at Route.dispatch (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\route.js:112:3)    at Layer.handle [as handle_request] (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\layer.js:95:5)    at C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\index.js:281:22    at Function.process_params (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\index.js:335:12)    at next (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\index.js:275:10)    at expressInit (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\middleware\init.js:40:5)    at Layer.handle [as handle_request] (C:\Users\ARAZ\Desktop\H\REact\nodeJS-Practice\node-express-course\02-express-tutorial\node_modules\express\lib\router\layer.js:95:5)

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