title: Cannot resolve symbol FirebaseVisionTextDetector
body: <p>I get <code>Cannot resolve symbol FirebaseVisionTextDetector</code> error when I put in my module: </p>
  
  <pre><code>import com.google.firebase.ml.vision.text.FirebaseVisionTextDetector;
  </code></pre>
  
  <p>I can't understand why because in <code>gradle</code> I have the correct implementation:</p>
  
  <pre><code>implementation 'com.google.firebase:firebase-ml-vision:18.0.1'
  </code></pre>
  
  <p><strong>SOLVED</strong></p>
  
  <p>I have solved by downgrading to <code>16.0.0</code>. Still don't know the reason why.</p>
  
  <pre><code>implementation 'com.google.firebase:firebase-ml-vision:16.0.0'
  </code></pre>