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

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette ‘Rarefy_basics.Rmd’ failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature 'x = "NULL", CRSobj = "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘Rarefy_basics.Rmd’ using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette ‘Rarefy_basics.Rmd’ failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature 'x = "NULL", CRSobj = "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘Rarefy_basics.Rmd’ using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette 'Rarefy_basics.Rmd' failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature 'x = "NULL", CRSobj = "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘Rarefy_basics.Rmd’ using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette 'Rarefy_basics.Rmd' failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature 'x = "NULL", CRSobj = "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'Rarefy_basics.Rmd' using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette 'Rarefy_basics.Rmd' failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature 'x = "NULL", CRSobj = "character"'
--- failed re-building 'Rarefy_basics.Rmd'

SUMMARY: processing the following file failed:
  'Rarefy_basics.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘Rarefy_basics.Rmd’ using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette ‘Rarefy_basics.Rmd’ failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature '"NULL", "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘Rarefy_basics.Rmd’ using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette ‘Rarefy_basics.Rmd’ failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature '"NULL", "character"'
--- failed re-building ‘Rarefy_basics.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'Rarefy_basics.Rmd' using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette 'Rarefy_basics.Rmd' failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature '"NULL", "character"'
--- failed re-building 'Rarefy_basics.Rmd'

SUMMARY: processing the following file failed:
  'Rarefy_basics.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'Rarefy_basics.Rmd' using rmarkdown

Quitting from lines 163-168 [unnamed-chunk-10] (Rarefy_basics.Rmd)
Error: processing vignette 'Rarefy_basics.Rmd' failed with diagnostics:
unable to find an inherited method for function 'spTransform' for signature '"NULL", "character"'
--- failed re-building 'Rarefy_basics.Rmd'

SUMMARY: processing the following file failed:
  'Rarefy_basics.Rmd'

Error: Vignette re-building failed.
Execution halted