Package: geojsonsf
Check: whether package can be installed
New result: ERROR
  Installation failed.

Package: mapdeck
Check: tests
New result: ERROR
    Running ‘testthat.R’ [0m/30m]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > library(testthat)
    > library(mapdeck)
    > 
    > test_check("mapdeck")