Package check result: ERROR

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Chen Peng <bfzede@gmail.com>’
  
  New maintainer:
    Chen Peng <bfzede@gmail.com>
  Old maintainer(s):
    Chen Peng <pengchen2001@zju.edu.cn>

Check: examples, Result: ERROR
  Running examples in ‘ReporterScore-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: KO_gsva
  > ### Title: Perform Gene Set Variation Analysis
  > ### Aliases: KO_gsva
  > 
  > ### ** Examples
  > 
  > ## No test: 
  > ## use `gsva` from the `GSVA` package.
  > if (requireNamespace("GSVA")) {
  +   data("reporter_score_res")
  +   gsva_res <- KO_gsva(reporter_score_res, p.adjust.method = "none")
  + }
  Loading required namespace: GSVA
  =================================Checking group=================================
  
  30 samples are matched for next step.
  ===========================Removing all-zero rows: 0============================
  
  Error: unable to find an inherited method for function ‘gsva’ for signature ‘param = "matrix"’
  Execution halted