title: Cant change database field varchar length (error 500)
body: <p>I'm in my phpmyadmin and I'm trying to increase a column in a table that is currently <strong>varchar(7)</strong> to <strong>varchar(10)</strong>. 
  :
  I select the column to change it and then enter 10 in the length/values field and click save. </p>
  
  <p>Every time I attempt this I get: Error Code 500 - 'Internal Server Error' (see attached image)</p>
  
  <p><img src="https://i.stack.imgur.com/w3w7h.jpg" alt="error code 500 when changing varchar length"></p>