Package check result: ERROR

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Jan Lisec <jan.lisec@bam.de>’
  
  Uses the non-portable package: ‘xcms’

Check: examples, Result: ERROR
  Running examples in ‘MetabolomicsBasics-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: ReplaceMissingValues
  > ### Title: ReplaceMissingValues.
  > ### Aliases: ReplaceMissingValues
  > 
  > ### ** Examples
  > 
  > # load raw data and sample description
  > raw <- MetabolomicsBasics::raw
  > sam <- MetabolomicsBasics::sam
  > 
  > idx <- apply(raw, 2, CheckForOutliers, group = sam$GT, n_sd = 5, method = "logical")
  > sum(idx) # 215 values would be classified as outlier using a five-sigma band
  [1] 215
  > old_vals <- raw[idx] # keep outlier values for comparison
  > raw_filt <- raw
  > raw_filt[idx] <- NA
  > raw_means <- apply(raw, 2, function(x) {
  +   sapply(split(x, sam$GT), mean, na.rm = TRUE)[as.numeric(sam$GT)]
  + })[idx]
  > raw_repl <- ReplaceMissingValues(x = raw_filt)
  Warning in verify_suggested("mixOmics", default = x) :
    The use of this function requires package mixOmics. Please install.
  
  ...replacing missing values in a data matrix of m x n = 120 x 112(=13440)Error in loadNamespace(x) : there is no package called ‘mixOmics’
  Calls: ReplaceMissingValues ... loadNamespace -> withRestarts -> withOneRestart -> doWithOneRestart
  Execution halted