Error(s) in re-building vignettes:
  ...
--- re-building ‘Compare-methods.Rmd’ using rmarkdown
Could not fetch https://raw.githubusercontent.com/citation-style-language/styles/master/dependent/biology-letters.csl
HttpExceptionRequest Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/citation-style-language/styles/master/dependent/biology-letters.csl"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
 (StatusCodeException (Response {responseStatus = Status {statusCode = 503, statusMessage = "Backend unavailable, connection timeout"}, responseVersion = HTTP/1.1, responseHeaders = [("Connection","keep-alive"),("Content-Length","508"),("Server","Varnish"),("Retry-After","0"),("Content-Type","text/html; charset=utf-8"),("Accept-Ranges","bytes"),("Date","Mon, 06 Apr 2026 15:02:31 GMT"),("Via","1.1 varnish"),("X-Served-By","cache-muc13977-MUC"),("X-Cache","MISS"),("X-Cache-Hits","0"),("X-Timer","S1775487750.036725,VS0,VE1303"),("Access-Control-Allow-Origin","*"),("Cross-Origin-Resource-Policy","cross-origin"),("X-Fastly-Request-ID","44292c587b2fd8eb63bb42fac723f64eeb18c16d"),("Expires","Mon, 06 Apr 2026 15:07:31 GMT"),("Vary","Authorization,Accept-Encoding")], responseBody = (), responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/citation-style-language/styles/master/dependent/biology-letters.csl"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
, responseEarlyHints = []}) "\n<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"\n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html>\n  <head>\n    <title>503 Backend unavailable, connection timeout</title>\n  </head>\n  <body>\n    <h1>Error 503 Backend unavailable, connection timeout</h1>\n    <p>Backend unavailable, connection timeout</p>\n    <h3>Error 54113</h3>\n    <p>Details: cache-muc13924-MUC 1775487751 4151280391</p>\n    <hr>\n    <p>Varnish cache server</p>\n  </body>\n</html>\n")
Error: processing vignette 'Compare-methods.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building 'Compare-methods.Rmd'

--- re-building ‘Compare-node-supports.Rmd’ using rmarkdown
--- finished re-building 'Compare-node-supports.Rmd'

--- re-building ‘Conduct-analyses.Rmd’ using rmarkdown
--- finished re-building ‘Conduct-analyses.Rmd’

SUMMARY: processing the following file failed:
  ‘Compare-methods.Rmd’

Error: Vignette re-building failed.
Execution halted