title: What is Killed:9 and how to fix in macOS Terminal?
body: <p>I have a simple Python code for a machine learning project. I have a relatively big database of spontaneous speech. I started to train my speech model. Since it's a huge database I let it work overnight. In the morning I woke up and saw a mysterious</p>
  <p><strong>Killed: 9</strong></p>
  <p>line in my Terminal. Nothing else. There is no other error message or something to work with. The code run well for about 6 hours which is 75% of the whole process so I really don't understand whats went wrong.</p>
  <p>What is Killed:9 and how to fix it? It's very frustrating to lose hours of computing time...</p>
  <p>I'm on macOS Mojave beta if it's matter. Thank you in advance!</p>