Error(s) in re-building vignettes:
--- re-building 'getting_started_with_spinifex.Rmd' using rmarkdown
--------------------------------------------------------
spinifex --- version 0.3.6
Please share bugs, suggestions, and feature requests at:
https://github.com/nspyrison/spinifex/issues/
--------------------------------------------------------

Attaching package: 'spinifex'

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

    is_orthonormal, save_history


Attaching package: 'ggplot2'

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

    scale_colour_discrete, scale_fill_discrete


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

Using width 2.38
Could not fetch https://github.com/nspyrison/spinifex/blob/master/vignettes/gt_penguins.gif?raw=true
HttpExceptionRequest Request {
  host                 = "github.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/nspyrison/spinifex/blob/master/vignettes/gt_penguins.gif"
  queryString          = "?raw=true"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 (InternalException (HandshakeFailed (Error_Misc "Network.Socket.recvBuf: invalid argument (Invalid argument)")))
Error: processing vignette 'getting_started_with_spinifex.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building 'getting_started_with_spinifex.Rmd'

--- re-building 'ggproto_api.Rmd' using rmarkdown
Could not fetch https://github.com/nspyrison/spinifex/blob/master/vignettes/proto_mt_penguins.gif?raw=true
HttpExceptionRequest Request {
  host                 = "github.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/nspyrison/spinifex/blob/master/vignettes/proto_mt_penguins.gif"
  queryString          = "?raw=true"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 (InternalException (HandshakeFailed (Error_Misc "Network.Socket.recvBuf: invalid argument (Invalid argument)")))
Error: processing vignette 'ggproto_api.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building 'ggproto_api.Rmd'

SUMMARY: processing the following files failed:
  'getting_started_with_spinifex.Rmd' 'ggproto_api.Rmd'

Error: Vignette re-building failed.
Execution halted