Error(s) in re-building vignettes:
  ...
--- re-building ‘distributions.Rmd’ using rmarkdown

Attaching package: 'ssdtools'

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

    dgamma, dweibull, pgamma, pweibull, qgamma, qweibull, rgamma,
    rweibull

Could not fetch https://i.creativecommons.org/l/by/4.0/80x15.png
HttpExceptionRequest Request {
  host                 = "i.creativecommons.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/l/by/4.0/80x15.png"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 ConnectionTimeout
Error: processing vignette 'distributions.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘distributions.Rmd’

--- re-building ‘exposure-plots.Rmd’ using rmarkdown

Attaching package: 'ssdtools'

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

    dgamma, dweibull, pgamma, pweibull, qgamma, qweibull, rgamma,
    rweibull

--- finished re-building ‘exposure-plots.Rmd’

--- re-building ‘faqs.Rmd’ using rmarkdown

Attaching package: 'ssdtools'

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

    dgamma, dweibull, pgamma, pweibull, qgamma, qweibull, rgamma,
    rweibull


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

--- finished re-building ‘faqs.Rmd’

--- re-building ‘small-sample-bias-ref.Rmd’ using rmarkdown
--- finished re-building ‘small-sample-bias-ref.Rmd’

--- re-building ‘ssdtools.Rmd’ using rmarkdown

Attaching package: 'ssdtools'

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

    dgamma, dweibull, pgamma, pweibull, qgamma, qweibull, rgamma,
    rweibull

--- finished re-building ‘ssdtools.Rmd’

--- re-building ‘small-sample-bias.pdf.asis’ using asis
--- finished re-building ‘small-sample-bias.pdf.asis’

SUMMARY: processing the following file failed:
  ‘distributions.Rmd’

Error: Vignette re-building failed.
Execution halted