How to fix 2d UFO rotation problem

I was hoping I could find a thread specially for 2d ufo tutorial but it looks like there's none. My issue is as follows:

After following the tutorial to the point where I reach writing the scripts to move the player, I succeed moving the round object (considered a ufo) around. However, the background rotates. The tutorial uses an older version of unity and I can't find any notes in the internet on how this rotation can be stopped. SEe the screenshot to understand this better. How do I stop the rotation? In case anyone needs to check the script, see link https://learn.unity.com/project/2d-ufo-tutorial.

 

Issue solved. Reply not required.