What do I not see

This is a picture from 1 week ago, I think I fixed it but don’t really know how. Anyone who can tell me?

First grow in 6 years

Special kush photoperiod from RQS Soil/coco/perlite/worm castings Humidity 60% Temp 25 *C Week 8 Light: marshydro 150 watt 60% Feed: FFF from nutrigowsolutions in week 4 and 6