Your donor area appears to be depleted. If you require further surgery it would have to be strip surgery or you should have been advised to have strip surgery in the first place.
Sometimes there may be such a early phase weak and low density spots in donor areas after FUE surgery, but fortunatelly most are transient. İt may happen because of over harvesting or transient post traumatic shedding /shock loss. Any way it heals and hair regrow in 4-5 months of hair restoration surgery .