title: how to handle error in deepFace.analyze() when no face is found?
body: <pre><code>img=cv2.imread(face.jpg)
  predictions= DeepFace.analyze(img)
  </code></pre>
  <p><code>Error: Face could not be detected. Please confirm that the picture is a face photo or consider to set enforce_detection param to False.</code></p>
  <p>setting <code>enforce_detection</code> to <code>False</code> is causing it to read emotions even if there is no face in the image</p>
  <p>how do we handle this error so that it tells us that there is no face?</p>