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node js error

TypeError: res.send is not a function    at C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorialapp.js:6:9    at Layer.handle [as handle_request] (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerlayer.js:95:5)    at next (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outer
oute.js:137:13)    at Route.dispatch (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outer
oute.js:112:3)    at Layer.handle [as handle_request] (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerlayer.js:95:5)    at C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerindex.js:281:22    at Function.process_params (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerindex.js:335:12)    at next (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerindex.js:275:10)    at expressInit (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslibmiddlewareinit.js:40:5)    at Layer.handle [as handle_request] (C:UsersARAZDesktopHREact
odeJS-Practice
ode-express-course2-express-tutorial
ode_modulesexpresslib
outerlayer.js:95:5)