Error(s) in re-building vignettes:
--- re-building ‘case_fatality_rate.Rmd’ using rmarkdown
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.0 ──
✔ ggplot2 3.3.0     ✔ purrr   0.3.3
✔ tibble  2.1.3     ✔ dplyr   0.8.5
✔ tidyr   1.0.2     ✔ stringr 1.4.0
✔ readr   1.3.1     ✔ forcats 0.5.0
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
Loading required package: viridisLite

Attaching package: 'scales'

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

    viridis_pal

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

    discard

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

    col_factor

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 'case_fatality_rate.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘case_fatality_rate.Rmd’

--- re-building ‘case_study_global_trends.Rmd’ using rmarkdown
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.0 ──
✔ ggplot2 3.3.0     ✔ purrr   0.3.3
✔ tibble  2.1.3     ✔ dplyr   0.8.5
✔ tidyr   1.0.2     ✔ stringr 1.4.0
✔ readr   1.3.1     ✔ forcats 0.5.0
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
Loading required package: viridisLite
Downloading data from: https://extranet.who.int/tme/generateCSV.asp?ds=estimates
Saving data to: /Volumes/Temp/tmp/Rtmpmkcw5R/tb_burden.rds
Downloading data from: https://extranet.who.int/tme/generateCSV.asp?ds=mdr_rr_estimates
Saving data to: /Volumes/Temp/tmp/Rtmpmkcw5R/mdr_tb.rds
Joining TB burden data and MDR TB data.
Downloading data from: https://extranet.who.int/tme/generateCSV.asp?ds=dictionary
Saving data to: /Volumes/Temp/tmp/Rtmpmkcw5R/dictionary.rds
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 'case_study_global_trends.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘case_study_global_trends.Rmd’

--- re-building ‘intro.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

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 'intro.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘intro.Rmd’

SUMMARY: processing the following files failed:
  ‘case_fatality_rate.Rmd’ ‘case_study_global_trends.Rmd’ ‘intro.Rmd’

Error: Vignette re-building failed.
Execution halted