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

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

collapse 1.1.0, see ?`collapse-package` or ?`collapse-documentation`

Attaching package: 'collapse'

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

    D

Panel-lag computed without timevar: Assuming ordered data
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'collapse_and_dplyr.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘collapse_and_dplyr.Rmd’

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

Attaching package: 'plm'

The following object is masked from 'package:data.table':

    between

collapse 1.1.0, see ?`collapse-package` or ?`collapse-documentation`

Attaching package: 'collapse'

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

    D

Warning in FUN(X[[i]], ...) : NaNs produced
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'collapse_and_plm.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘collapse_and_plm.Rmd’

--- re-building ‘collapse_intro.Rmd’ using rmarkdown
Loading required package: MASS
Loading required package: strucchange
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: urca
Loading required package: lmtest

Attaching package: 'dplyr'

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

    select

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

    filter, lag

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

    intersect, setdiff, setequal, union

collapse 1.1.0, see ?`collapse-package` or ?`collapse-documentation`

Attaching package: 'collapse'

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

    B

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

    is.regular

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

    D


Attaching package: 'data.table'

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

    between, first, last

Warning in `[.data.table`(qDT(wlddev), , `:=`(paste0("G.", names(wlddev)[9:12]),  :
  Invalid .internal.selfref detected and fixed by taking a (shallow) copy of the data.table so that := can add this new column by reference. At an earlier point, this data.table has been copied by R (or was created manually using structure() or similar). Avoid names<- and attr<- which in R currently (and oddly) may copy the whole data.table. Use set* syntax instead to avoid copying: ?set, ?setnames and ?setattr. If this message doesn't help, please report your use case to the data.table issue tracker so the root cause can be fixed or this message improved.
Warning in FUN(X[[i]], ...) : NaNs produced
Panel-growth rate computed without timevar: Assuming ordered data
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'collapse_intro.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘collapse_intro.Rmd’

SUMMARY: processing the following files failed:
  ‘collapse_and_dplyr.Rmd’ ‘collapse_and_plm.Rmd’ ‘collapse_intro.Rmd’

Error: Vignette re-building failed.
Execution halted