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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD build --keep-empty-dirs --no-resave-data banocc
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* checking for file ‘banocc/DESCRIPTION’ ... OK
* preparing ‘banocc’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘banocc-vignette.Rmd’ using rmarkdown
DIAGNOSTIC(S) FROM PARSER:
Info: integer division implicitly rounds to integer. Found int division: P * P - 1 / 2
 Positive values rounded down, negative values rounded up or down in platform-dependent way.

Could not fetch https://latex.codecogs.com/png.image?%5Cdpi%7B110%7D&space;%5Cbg_white&space;N%20%5Ctimes%20P
HttpExceptionRequest Request {
  host                 = "latex.codecogs.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/png.image"
  queryString          = "?%5Cdpi%7B110%7D&space;%5Cbg_white&space;N%20%5Ctimes%20P"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 (InternalException (HostCannotConnect "latex.codecogs.com" [Network.Socket.connect: <socket: 15>: does not exist (Connection refused)]))
Error: processing vignette 'banocc-vignette.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘banocc-vignette.Rmd’

SUMMARY: processing the following file failed:
  ‘banocc-vignette.Rmd’

Error: Vignette re-building failed.
Execution halted