fix nil doc_block
fix nil doc_block

landsurveyorsunited/hologram,angelabier1/hologram,landsurveyorsunited/hologram,angelabier1/hologram,hideki-a/hologram,mike6398/hologram,askl56/hologram,hunj/hologram,sbrady/hologram,donnoman/hologram,mike6398/hologram,electronspin/hologram,hideki-a/hologram,trulia/hologram,sbrady/hologram,donnoman/hologram,hunj/hologram,trulia/hologram,electronspin/hologram,askl56/hologram