Why does my 2D character and platform disappear when i move left? (I'm a beginner)

I’ve been using a tutorial to figure out how to make a 2D game but when I try to move the character left the sprite and platform go blank. When i move right again it reappears. Why? and how do I fix it?

What tutorial you are following. My best guess that when you do right and left you setting the value of the scale between 1 and -1 in order to fake the direction change. So this might be the solution for your problem, to make sure you setting the correct scale values. And make sure the value is not 0.

-m