Body: <p>I got this weird error message when trying to view a previous revision...</p>
  <blockquote>
  <p><strong>Internal Server Error</strong></p>
  <p>CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'field_8mvcY59Y5sz9qAyfufetQi5LWATEmqwdMnVR' in 'field list'</p>
  </blockquote>
  <p><a href="https://i.sstatic.net/CcBvg.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/CcBvg.png" alt="Error: Unknown column" /></a></p>
  <p>I didn't really do anything too unusual... I simply tried to view a previous version of the entry.</p>
  <p><a href="https://i.sstatic.net/TxncT.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/TxncT.png" alt="View revisions" /></a></p>
  <p>Disclaimer... This is a very large website, and it's evolved <em>a lot</em> over the past year or so. I'm guessing this might have something to do with a field that has changed, but I really have no clue.</p>
  <p><strong>What does this mean? How did I get here? And how do I fix it?</strong></p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-07-07T19:37:19.300Z
Comments.Text: I would bet the same Lindsey :(
Comments.UserDisplayName: Matt P
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-07-07T20:25:33.607Z
Comments.Text: This one is going to be super-tough to debug without the actual database.  If you want to send it over to support@craftcms.com, we can take a stab at it and update here accordingly.
Comments.UserDisplayName: Brad Bell
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-07-08T14:49:25.750Z
Comments.Text: Would be interesting to see how this is resolved. Looks like a super random field too...
Comments.UserDisplayName: RitterKnight
Tags: <error-message><entry-versions>
Title: Error when trying to view a previous version of an entry
ThreadText: # Error when trying to view a previous version of an entry
  
  (Asked by: username_0 on 2016-07-07)
  
  I got this weird error message when trying to view a previous revision...
  
  > **Internal Server Error**
  >
  > CDbCommand failed to execute the SQL statement: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'field\_8mvcY59Y5sz9qAyfufetQi5LWATEmqwdMnVR' in 'field list'
  
  [![Error: Unknown column](https://i.sstatic.net/CcBvg.png)](https://i.sstatic.net/CcBvg.png)
  
  I didn't really do anything too unusual... I simply tried to view a previous version of the entry.
  
  [![View revisions](https://i.sstatic.net/TxncT.png)](https://i.sstatic.net/TxncT.png)
  
  Disclaimer... This is a very large website, and it's evolved *a lot* over the past year or so. I'm guessing this might have something to do with a field that has changed, but I really have no clue.
  
  **What does this mean? How did I get here? And how do I fix it?**
  
  **Tags:** error-message, entry-versions
  
  > **Comments:**
  > **username_1**: I would bet the same username_0 :(  
  > **username_2**: This one is going to be super-tough to debug without the actual database.  If you want to send it over to support@craftcms.com, we can take a stab at it and update here accordingly.  
  > **username_3**: Would be interesting to see how this is resolved. Looks like a super random field too...  
  
  ---
  
  ## 0 answers
  
  