fixed bug when output model in integrate gapfills is left blank
fixed bug when output model in integrate gapfills is left blank

nlharris/narrative,kbase/narrative,mlhenderson/narrative,aekazakov/narrative,mlhenderson/narrative,psnovichkov/narrative,pranjan77/narrative,mlhenderson/narrative,psnovichkov/narrative,msneddon/narrative,msneddon/narrative,pranjan77/narrative,mlhenderson/narrative,nlharris/narrative,jmchandonia/narrative,jmchandonia/narrative,scanon/narrative,psnovichkov/narrative,pranjan77/narrative,pranjan77/narrative,scanon/narrative,pranjan77/narrative,briehl/narrative,scanon/narrative,kbase/narrative,kbase/narrative,aekazakov/narrative,psnovichkov/narrative,scanon/narrative,nlharris/narrative,scanon/narrative,aekazakov/narrative,mlhenderson/narrative,aekazakov/narrative,nlharris/narrative,msneddon/narrative,msneddon/narrative,kbase/narrative,briehl/narrative,briehl/narrative,kbase/narrative,briehl/narrative,nlharris/narrative,msneddon/narrative,rsutormin/narrative,aekazakov/narrative,rsutormin/narrative,jmchandonia/narrative,msneddon/narrative,psnovichkov/narrative,psnovichkov/narrative,msneddon/narrative,nlharris/narrative,kbase/narrative,rsutormin/narrative,briehl/narrative,pranjan77/narrative,jmchandonia/narrative,scanon/narrative,rsutormin/narrative,pranjan77/narrative,psnovichkov/narrative,nlharris/narrative,aekazakov/narrative,jmchandonia/narrative,jmchandonia/narrative,jmchandonia/narrative,briehl/narrative,rsutormin/narrative,mlhenderson/narrative,briehl/narrative,rsutormin/narrative