title: No module named 'utils'
body: <p>I am new to the world of python. I am trying to learn first order logic from <a href="https://github.com/aimacode/aima-python/blob/master/logic.ipynb" rel="nofollow noreferrer">https://github.com/aimacode/aima-python/blob/master/logic.ipynb</a></p>
  
  <p>I just follow the same steps as mentioned but I get the following error. </p>
  
  <pre><code>ModuleNotFoundError: No module named 'utils'
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/UtYLm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UtYLm.png" alt="enter image description here"></a></p>
  
  <p>I use Jupyter notebook for the testing purpose. I can see there are questions related to this error. But still I could not solve it.
  Thanks for any input. </p>