Namespaces in Imports field not imported from:
  ‘kableExtra’ ‘knitr’ ‘spatstat’
  All declared Imports should be used.
Package required but not available: 'ggspatial'

See section 'The DESCRIPTION file' in the 'Writing R Extensions'
manual.
Package required but not available: ‘lgcp’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.