nothing. forgetting to think about dreams.
It happens. Don't worry. It will come back.
Just tired, still haven't had a proper LD yet, but I know I'll get there eventually .
Even if you log "I don't recall my dreams now" It's still a log. Not of this type, Though:
Don't worry about it, recall takes some time to build and even then there are bad days. Something that has really helped me is telling myself "I remember my dreams" as I fall asleep. I also used to keep a little tag journal on the nightstand, when I'd wake up from a dream before I forgot I would write down a few main words and go over the plot in my head. Don't do it anymore but it was amazing when I did.