handle case where x does not exist on KTREE
handle case where x does not exist on KTREE

singaraiona/kona,moussazeghida/kona,pahihu/kona,moussazeghida/kona,kirbyfan64/kona,joebo/kona,kirbyfan64/kona,kevinlawler/kona,0branch/kona,pahihu/kona,0branch/kona,igaray/kona,igaray/kona,singaraiona/kona,0branch/kona,joebo/kona,pahihu/kona,joebo/kona,kevinlawler/kona,moussazeghida/kona,igaray/kona,kirbyfan64/kona