Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘DrugSim2DR-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: DrugReposition
  > ### Title: DrugReposition
  > ### Aliases: DrugReposition
  > 
  > ### ** Examples
  > 
  > library("igraph")
  
  Attaching package: ‘igraph’
  
  The following objects are masked from ‘package:stats’:
  
      decompose, spectrum
  
  The following object is masked from ‘package:base’:
  
      union
  
  > # Obtain the example data
  > GEP<-Gettest("GEP")
  > label<-Gettest("label")
  > # Run the function
  > DEscore<-CalDEscore(GEP,label)
  > # Run the function
  > ## No test: 
  > drug_centrality<-DrugReposition(DE=DEscore,nperm = 1000,r = 0.9,p = 10^-10)
  [1] "Note: Completing 1000 perturbations may be a time-consuming task."
  
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  Execution halted