title: MongoDB - Can't canonicalize query: BadValue unknown operator: $meta
body: <p>This happened to me in 2.6.1 - So, in case anyone wanders into this error, I thought I'd write the answer out. </p>
  
  <p>This first command worked fine, but the second one didn't.</p>
  
  <pre><code>db.test.find({$text: {$search: 'york'}} )
  
  db.test.find({$text: {$search: 'york'}, score: {$meta: 'textScore'}} )
  </code></pre>
  
  <p>and threw up the error below</p>
  
  <pre><code>{"$err": "Can't canonicalize query: BadValue unknown operator: $meta", "code": 17287}
  </code></pre>