'http://localhost:5000/index.html' is not accessible where as port is up

http://localhost:5000/index.html

This site can’t be reachedThe webpage at http://localhost:5000/index.html might be temporarily down or it may have moved permanently to a new web address.
ERR_SOCKET_NOT_CONNECTED
--------------------------------------------------------------------------------------------
http://www.websocket.org/echo.html

It shows message :
This browser supports WebSocket.
----------------------------------------------------------------------
Log:
samsung@DESKTOP-R22DT9L MINGW64 /e/cloudbees-training-jenkins-fundamentals
$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Clearing any previously set forwarded ports...
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
default: Adapter 1: nat
==> default: Forwarding ports...
default: 5000 (guest) => 5000 (host) (adapter 1)
default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
default: SSH address: 127.0.0.1:2222
default: SSH username: butler
default: SSH auth method: private key
default: Warning: Connection reset. Retrying...
default: Warning: Connection aborted. Retrying...
==> default: Machine booted and ready!
==> default: Checking for guest additions in VM...
default: No guest additions were detected on the base box for this VM! Guest
default: additions are required for forwarded ports, shared folders, host only
default: networking, and more. If SSH fails on this machine, please install
default: the guest additions and repackage the box to continue.
default:
default: This is not an error message; everything may continue to work properly,
default: in which case you may ignore this message.
==> default: Machine already provisioned. Run `vagrant provision` or use the `--provision`
==> default: flag to force provisioning. Provisioners marked to run always will still run.

samsung@DESKTOP-R22DT9L MINGW64 /e/cloudbees-training-jenkins-fundamentals
$ vagrant status
Current machine states:

default running (virtualbox)

The VM is running. To stop this VM, you can run `vagrant halt` to
shut it down forcefully, or you can run `vagrant suspend` to simply
suspend the virtual machine. In either case, to restart it again,
simply run `vagrant up`.

samsung@DESKTOP-R22DT9L MINGW64 /e/cloudbees-training-jenkins-fundamentals