What error does vagrant give on Ubuntu 16.04?

Question

ubuntu

Can you please tell me what is the error with the vagrant up command?
Operating systems Ubuntu 16.04.
Vagrant and virtual box latest versions.
Mistake

There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.
Command: ["startvm", "a4e93772-1f30-495a-a922-51a033b1256b", "--type", "headless"]
Stderr: VBoxManage: error: The virtual machine 'homestead' has terminated unexpectedly during startup with exit code 1 (0x1)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine

Answer 1

popular answer to remove something unnecessary from ~/VirtualBox VMs
and VAGRANT_LOG=info vagrant upwell, orvagrant up --debug