• using R version 4.0.2 (2020-06-22)
• using platform: x86_64-apple-darwin17.0 (64-bit)
• using session charset: UTF-8
• checking for file ‘sigminer/DESCRIPTION’ ... OK
• this is package ‘sigminer’ version ‘2.1.1’
• package encoding: UTF-8
• checking package namespace information ... OK
• checking package dependencies ... ERROR
  Package required but not available: ‘maftools’
  
  Package suggested but not available for checking: ‘copynumber’
  
  See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
  manual.
• DONE
  Status: 1 ERROR
• using check arguments '--no-clean-on-error '