Error on boot Ubuntu version

[baydam]

I have an error while trying to boot the Ubuntu machine with $ vagrant up

Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'ubuntu/focal64' could not be found. Attempting to find and install...
    default: Box Provider: virtualbox
    default: Box Version: >= 0
==> default: Loading metadata for box 'ubuntu/focal64'
    default: URL: https://vagrantcloud.com/ubuntu/focal64
==> default: Adding box 'ubuntu/focal64' (v20200414.1.0) for provider: virtualbox
    default: Downloading: https://vagrantcloud.com/ubuntu/boxes/focal64/versions/20200414.1.0/providers/virtualbox.box
    default: Download redirected to host: cloud-images.ubuntu.com
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.

The requested URL returned error: 404 Not Found

[aalex]

It should be online: https://app.vagrantup.com/ubuntu/boxes/focal64

Can you try again? Their server might have been down for a few minutes.