Error on Vagrant Up on Linux : <p>I try to run vagrant on my Ubuntu 14.04. So for, I did these steps:</p>

<p>-Install vagrant
-Install virtualbox
-added box for provider</p>

<p>then I run the </p>

<blockquote>
  <p>vagrant up</p>
</blockquote>

<p>command.</p>

<p>After running the command, I take these output and at the and there is an error message which I cannot figure out how can I solve and run it correctly.</p>

<blockquote>
  <p>Bringing machine 'default' up with 'virtualbox' provider...</p>
  
  <p>==> default: Checking if box 'udacity/ud381' is up to date...</p>
  
  <p>==> default: Clearing any previously set forwarded ports...</p>
  
  <p>==> default: Clearing any previously set network interfaces...</p>
  
  <p>==> default: Preparing network interfaces based on configuration...</p>

<pre><code>default: Adapter 1: nat
</code></pre>
  
  <p>==> default: Forwarding ports...</p>

<pre><code>default: 5000 (guest) =&gt; 5000 (host) (adapter 1)

default: 22 (guest) =&gt; 2222 (host) (adapter 1)
</code></pre>
  
  <p>==> default: Booting VM... 
  There was an error while executing
   <code>VBoxManage</code>, a CLI used by Vagrant for controlling VirtualBox. The
  command and stderr is shown below.</p>
  
  <p>Command: ["startvm", "0399f946-6a87-4310-a22d-c1a4525ae2f0", "--type",
  "headless"]</p>
  
  <p>Stderr: VBoxManage: error: The virtual machine
  'ud381_default_1463617458900_49294' has terminated unexpectedly during
  startup with exit code 1 (0x1) VBoxManage: error: Details: code
  NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface
  IMachine</p>
</blockquote>

<p>What should I do to fix these error ? </p>
