u/Miserable_Bad_8997

I've had this model for about 9 months now, never had issues with it mowing straight lines. This week I noticed the yard looked terrible with unmowed patches everywhere. I watched it mow for a few minutes and it won't go more than 1-2 feet in a straight line before turning in circles then heading another direction. I checked the spinning blade and it's clean with no obstructions. Any ideas on how to fix this?

I'll include a pic of the unmowed patches