title: Can't start Jupyter Notebook in Linux (Ubuntu)
body: <p>It says it installed Jupyter Notebook correctly, but when I launch it I get the error in the image:
  <a href="https://i.stack.imgur.com/2Mrs7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2Mrs7.png" alt="enter image description here"></a></p>
  
  <p>The installation I used was:
  pip</p>
  
  <pre><code>sudo apt-get install python3-pip
  </code></pre>
  
  <p>Then Pandas</p>
  
  <pre><code>sudo pip3 install pandas
  </code></pre>
  
  <p>then Jupyter notebook</p>
  
  <pre><code>sudo pip3 install Jupyter
  </code></pre>
  
  <p>Does it have anything to do with the version of Python (3 vs 2)?
  How do I get Jupyter Notebook to start?</p>