I'm facing the same issue. Could you guide me how did you solve it ? update_pixbuf_cache
What happens is my build runs, and halts at this point where it searches for a specific folder under rootfs but I believe that folder is not getting created under rootfs.
pdate_pixbuf_cache: 11: cannot create /ssd/ES18/hlos_dev/apps/apps_proc/poky/build/tmp-glibc/work/sa8775-joynext-linux/early-ramdisk-image/1.0-r0/rootfs/usr/lib/gdk-pixbuf-2.0/2.10.0/loaders/../loaders.cache: Directory nonexistent