Error(s) in re-building vignettes:
--- re-building ‘rmm_Multispecies.Rmd’ using rmarkdown
Type, vignette("rmm_directory") for an overview of functions

  vignette("rmm_vignette") for using the functions 

  vignette("rmm_workflow") for incorporating rmm in a range modeling workflow, or

  vignette("rmm_Multispeices") for including multiple species in a single rmm object
Loading required package: sp
--- finished re-building ‘rmm_Multispecies.Rmd’

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

--- re-building ‘rmm_vignette.Rmd’ using rmarkdown
Type, vignette("rmm_directory") for an overview of functions

  vignette("rmm_vignette") for using the functions 

  vignette("rmm_workflow") for incorporating rmm in a range modeling workflow, or

  vignette("rmm_Multispeices") for including multiple species in a single rmm object

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

--- finished re-building ‘rmm_vignette.Rmd’

--- re-building ‘rmm_workflowWithExampleRangeModel.Rmd’ using rmarkdown
Type, vignette("rmm_directory") for an overview of functions

  vignette("rmm_vignette") for using the functions 

  vignette("rmm_workflow") for incorporating rmm in a range modeling workflow, or

  vignette("rmm_Multispeices") for including multiple species in a single rmm object
Loading required package: sp
Loading required package: magrittr

Attaching package: 'magrittr'

The following object is masked from 'package:raster':

    extract


Attaching package: 'dplyr'

The following objects are masked from 'package:raster':

    intersect, select, union

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Loading required package: spam
Loading required package: dotCall64
Loading required package: grid
Spam version 2.6-0 (2020-12-14) is loaded.
Type 'help( Spam)' or 'demo( spam)' for a short introduction 
and overview of this package.
Help for individual functions is also obtained by adding the
suffix '.spam' to the function name, e.g. 'help( chol.spam)'.

Attaching package: 'spam'

The following objects are masked from 'package:base':

    backsolve, forwardsolve

Loading required package: fields
Loading required package: viridis
Loading required package: viridisLite
See https://github.com/NCAR/Fields for
 an extensive vignette, other supplements and source code 
Loading required package: knitr
Quitting from lines 89-91 (rmm_workflowWithExampleRangeModel.Rmd) 
Error: processing vignette 'rmm_workflowWithExampleRangeModel.Rmd' failed with diagnostics:
Datasets "occs" and "bg" have different column names. Please make them identical and try again.
--- failed re-building ‘rmm_workflowWithExampleRangeModel.Rmd’

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

Error: Vignette re-building failed.
Execution halted