"No intersection between xy plane and sketch plane" sometimes when I use sketch. Why?

I've been getting this error sometimes when I create an (un-positioned) sketch on a plane. The full text is as follows:
"No intersection between the xy plane and the sketch plane. Move the sketch plane or change the sketch feature to intersect."

First of all, why is this happening? Why is an intersection feature being created when I'm just starting a normal sketch? If I delete the intersection, what happens?

I'd really appreciate your help as I am very unsure! Thank you!

1 Answer

UPDATE: This was happening because I was unknowingly selecting the origin point and "fix"ing it (sketch constraint). Don't do that.