Installation error on Laravel 5.3
<p>I am trying to launch laravel which is locally hosted on my browser but it gives me the following error</p>

<blockquote>
  <p>Parse error: syntax error, unexpected '.', expecting '&amp;' or variable (T_VARIABLE) in /opt/lampp/htdocs/projects/larawiz/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php on line 475</p>
</blockquote>

<p>How can I correct this?</p>