title: Laravel 5.4 Migration Error
body: <p>I am facing a issue that I cannot resolve. I have my app hosted on my server using Ubuntu 16.04, PHP 7.1, MySQL and NGINX. My app works perfect. When I ssh to my server and app root I run the following, php artisan session:table, it runs successfully.</p>
  
  <p>When i run php artisan migrate I get foll0wing error and table is not created in my DB.</p>
  
  <pre><code>[Illuminate\Database\QueryException]                                         
    could not find driver (SQL: select * from information_schema.tables where t  
    able_schema = UNIT3D and table_name = migrations)                            
  
    [PDOException]         
    could not find driver 
  </code></pre>
  
  <p>Any ideas? Im trying to use this.<a href="https://github.com/thomastkim/laravel-online-users" rel="noreferrer">https://github.com/thomastkim/laravel-online-users</a></p>