title: Yii2 Internal Server Error #8
body: <p>I have created a dashboard using Yii2's php framework and mysql 5.3</p>
  
  <p>It is a pretty basic application that simply retrieves data from the DB using mysql and displays the results (date ranges can be specified, and certain data can be filtered out of results).  It's been in use for a little more than a year so far, with no issues.  I just recently was asked to implement some additional queries, and ever since that push certain date ranges return an:</p>
  
  <p>Error (#8)
  An internal server error occurred.</p>
  
  <p>Message. </p>
  
  <p>I've looked everywhere for what this means, but the best I could surmise is that it has something to do with null values; which I've thoroughly tested and am pretty confident is not the issue.  </p>
  
  <p>This error does not occur on my localhost instance of the application (which pulls from the dev server rather than the production server).  The dev server is identical to the production server except that it stores different information. </p>
  
  <p>Limitations: </p>
  
  <p>I do not have access to the production server to test on the user data creating the error.   </p>
  
  <p>If anyone has experienced this issue before and solved it, or could point me in the right direction to find out what's causing this I'd be very grateful.</p>
  
  <p>Thanks</p>