default: Box Provider: virtualbox
default: Box Version: >= 0
default: Loading metadata for box 'ubuntu/bionic64'
default: URL: https://vagrantcloud.com/ubuntu/bionic64
default: Adding box 'ubuntu/bionic64' (v20210609.0.0) for provider: virtualbox
default: Downloading: https://vagrantcloud.com/ubuntu/boxes/bionic64/versions/20210609.0.0/providers/virtualbox.box
default:
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: 404Entrando no site e buscando outras box similares ou com versões diferentes do Ubuntu, todas elas parecem estar inacessíveis.