Error(s) in re-building vignettes:
--- re-building 'tiler.Rmd' using rmarkdown
Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex1'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Loading required package: sp
Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex2'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex3'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex4'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex5'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex6'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex7'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'map1_tiles'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'map1'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'map2_tiles'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'map2'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex8'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

Warning in block_exec(params) :
  Failed to tidy R code in chunk 'ex9'. Reason:
Error in loadNamespace(name) : there is no package called 'formatR'

pandoc.exe: Could not fetch D:\temp\Rtmp6xUot1\leaflet-providers_1.9.0.js
D:\temp\Rtmp6xUot1\leaflet-providers_1.9.0.js: openBinaryFile: does not exist (No such file or directory)
Error: processing vignette 'tiler.Rmd' failed with diagnostics:
pandoc document conversion failed with error 67
--- failed re-building 'tiler.Rmd'

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

Error: Vignette re-building failed.
Execution halted