title: opencv Code keep crashing and didn't execute afterward
body: <p>I was working on a project that was running fine but now when I try to setup the whole code again for the client. my opencv code execute and crashes the first time I try to run it.afterwards the code doesn't even execute until I restart my system again.then code execute and crash again then it doesn't even execute. the terminal shows the msg(attached image) and nothing happen afterwards</p>
  <p>os: ubuntu 18.04
  python version: python3
  opencv version 4
  <a href="https://i.stack.imgur.com/93by4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/93by4.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/Tqpno.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Tqpno.png" alt="enter image description here" /></a></p>