Undeclared package ‘installr’ in Rd xrefs

Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential

Found the following files/directories:
  ‘Crashpad’
Found the following files/directories:
  ‘Crashpad’

Namespaces in Imports field not imported from:
  ‘kableExtra’ ‘knitr’ ‘leaflet’ ‘mapview’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘kableExtra’ ‘knitr’ ‘leaflet’ ‘mapview’
  All declared Imports should be used.

Error(s) in re-building vignettes:
--- re-building ‘ClusVis.Rmd’ using rmarkdown
--- finished re-building ‘ClusVis.Rmd’

--- re-building ‘MixtComp.Rmd’ using rmarkdown

Quitting from lines 138-142 [partition] (MixtComp.Rmd)
Error: processing vignette 'MixtComp.Rmd' failed with diagnostics:
dim(X) must have a positive length
--- failed re-building ‘MixtComp.Rmd’

--- re-building ‘dataFormat.Rmd’ using rmarkdown
--- finished re-building ‘dataFormat.Rmd’

--- re-building ‘mixtCompObject.Rmd’ using rmarkdown
--- finished re-building ‘mixtCompObject.Rmd’

SUMMARY: processing the following file failed:
  ‘MixtComp.Rmd’

Error: Vignette re-building failed.
Execution halted

Running ‘testthat.R’ [84s/113s]
Running the tests in ‘tests/testthat.R’ failed.
Last 13 lines of output:
   17. │ │ │   └─domain$wrapSync(expr)
   18. │ │ │     └─base::force(expr)
   19. │ │ └─withr::with_options(...)
   20. │ │   └─base::force(code)
   21. │ └─rlang::eval_tidy(quosure, mask, rlang::caller_env())
   22. ├─testthat::expect_equal(class(output$statsGuide), "list") at test-moduleStatsGuide.R:7:4
   23. │ └─testthat::quasi_label(enquo(object), label, arg = "object")
   24. │   └─rlang::eval_bare(expr, quo_get_env(quo))
   25. ├─output$statsGuide
   26. └─shiny:::`$.shinyoutput`(output, statsGuide)
   27.   └─.subset2(x, "impl")$getOutput(name)
  
  [ FAIL 7 | WARN 0 | SKIP 37 | PASS 233 ]
  Error: Test failures
  Execution halted