In the following code excerpt I seek to get the population statistics from my gating set (gs), however my code returns Empty data.table (0 rows) of 6 cols: name,Population,Parent,Count,ParentCount,prop despite my gating set containing 96 samples in it. 

#Reads in Flow Set and assigns to flowData
  flowData <- read.flowSet(path = data_path, isncdf = TRUE)
  #Creates Gating Set (gs) from Flow Data (flowData)
  gs<-GatingSet(flowData)
  
  #compensate
  comp <- spillover(flowData[[1]])[["SPILL"]]
  print('Comp 1 Done')
  chnls <- colnames(comp)
  print('Chnls Done')
  comp <- compensation(comp)
  print('Comp 2 Done')
  gs <- compensate(gs, comp)
  print('gs Done')
  
  #transform FlowJo Biex
  trans <- flowJo_biexp_trans(widthBasis = -40)
  print('Trans 1 Done')
  trans <- transformerList(from = chnls,trans = trans)
  print('Trans 2 Done')
  gs <- transform(gs, trans)
  print('gs 2 Done')
 

  #get population statistics

  stats <- getPopStats(gs) 

                       # statistic = c("freq", "count"),
                       # xml = FALSE, subpopulations = NULL, 
                       # format = c("long", "wide"),
                       # path = "auto")
  print(stats[,prop := Count/ParentCount])