[R-pkg-devel] vignette leaflet Mac

Hi,

I have a vignette (URL below) with

leaflet(geoIndex) %>% addTiles() %>%
        addCircles(~lon, ~lat) [...]

that produces the following warning on solaris and osx:


Error in re-building vignettes:

Warning in engine$weave(file, quiet = quiet, encoding = enc) :
Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Warning in normalizePath(f2) :
path[1]="./webshot339b5b6a34d4.png": No such file or directory


I have no access to Solaris and OSX. How can I go about fixing this?
The warning started to appear with the last package update, but the vignette was not changed...

Thanks ahead,
Berry

URLs to vignette source, CRAN html view, check results:
https://raw.githubusercontent.com/brry/rdwd/master/vignettes/mapDWD.Rmd
https://cran.r-project.org/web/packages/rdwd/vignettes/mapDWD.html

https://cran.r-project.org/web/checks/check_results_rdwd.html