Package check result: ERROR

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Dylan Beaudette <dylan.beaudette@usda.gov>’
  
  Size of tarball: 5125135 bytes

Check: tests, Result: ERROR
    Running ‘testthat.R’ [25s/24s]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > library(testthat)
    > library(aqp)
    This is aqp 2.2
    > 
    > # limit all tests involving data.table 
    > # to 2 threads for CRAN compliance
    > data.table::setDTthreads(Sys.getenv("OMP_THREAD_LIMIT", unset = 2))
    > 
    > # Sys.setenv("_SP_EVOLUTION_STATUS_"=2)
    > test_check("aqp")
    [ FAIL 1 | WARN 0 | SKIP 24 | PASS 1348 ]
    
    ══ Skipped tests (24) ══════════════════════════════════════════════════════════
    • On CRAN (4): 'test-DT-tbl.R:6:3', 'test-color-signature.R:64:3',
      'test-fix-find-overlap.R:40:3', 'test-fix-find-overlap.R:89:3'
    • is.null(test) is TRUE (1): 'test-DT-tbl.R:105:5'
    • {Gmedian} is not installed (5): 'test-L1_profiles.R:7:3',
      'test-SoilProfileCollection-metadata.R:48:3', 'test-colorQuantiles.R:8:3',
      'test-colorQuantiles.R:23:3', 'test-colorQuantiles.R:37:3'
    • {Hmisc} is not installed (2): 'test-slab.R:90:3',
      'test-textureTriangleSummary.R:11:3'
    • {compositions} is not installed (1): 'test-bootstrapSoilTexture.R:11:3'
    • {gower} is not installed (8): 'test-aggregateColor.R:14:3',
      'test-aggregateColor.R:40:3', 'test-aggregateColor.R:48:3',
      'test-aggregateColor.R:78:3', 'test-mixMunsell.R:42:3',
      'test-mixMunsell.R:57:3', 'test-mixMunsell.R:107:3',
      'test-simulateColor.R:12:3'
    • {mpspline2} is not installed (2): 'test-spc2mpspline.R:2:3',
      'test-spc2mpspline.R:51:3'
    • {sf} is not installed (1): 'test-SPC-objects.R:205:3'
    
    ══ Failed tests ════════════════════════════════════════════════════════════════
    ── Error ('test-genhz.R:95:3'): evalGenHZ works as expected ────────────────────
    Error: package `MASS` is required
    Backtrace:
        ▆
     1. └─aqp::evalGenHZ(sp3, genhz = "genhz", vars = "clay") at test-genhz.R:95:3
    
    [ FAIL 1 | WARN 0 | SKIP 24 | PASS 1348 ]
    Error: Test failures
    Execution halted