Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘micd-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: flexMItest
  > ### Title: Wrapper for gaussMItest, disMItest and mixMItest
  > ### Aliases: flexMItest
  > 
  > ### ** Examples
  > 
  > ## load data (numeric and factor variables)
  > library(ranger)
  Error in library(ranger) : there is no package called ‘ranger’
  Execution halted