Error(s) in re-building vignettes:
--- re-building ‘intro_to_gtfs2gps.Rmd’ using rmarkdown
Writing text files to /Volumes/Temp/tmp/RtmpqvjuAF/gtfsio713361e0a818
  - Writing agency.txt
  - Writing calendar.txt
  - Writing routes.txt
  - Writing shapes.txt
  - Writing stop_times.txt
  - Writing stops.txt
  - Writing trips.txt
GTFS object successfully zipped to poa_small.zip
Unzipping and reading poa_small.zip
Unzipped the following files to /Volumes/Temp/tmp/RtmpqvjuAF/gtfsio:
  * agency.txt
  * calendar.txt
  * routes.txt
  * shapes.txt
  * stop_times.txt
  * stops.txt
  * trips.txt
Reading agency.txt
Reading calendar.txt
Reading routes.txt
Reading shapes.txt
Reading stop_times.txt
Reading stops.txt
Reading trips.txt
Converting shapes to sf objects
Processing the data

Attaching package: 'purrr'

The following object is masked from 'package:magrittr':

    set_names


Attaching package: 'data.table'

The following object is masked from 'package:purrr':

    transpose

Linking to GEOS 3.9.1, GDAL 3.4.2, PROJ 8.2.1; sf_use_s2() is TRUE
udunits database from /Volumes/Builds/packages/big-sur-arm64/Rlib/4.2/units/share/udunits/udunits2.xml
50 'speed' values are NA for shapeid 'A141-1'.
3724 'speed' values are NA for shapeid 'T2-1'.
Some 'speed' values are NA in the returned data.
Unzipping and reading poa.zip
Unzipped the following files to /Volumes/Temp/tmp/RtmpqvjuAF/gtfsio:
  * agency.txt
  * calendar.txt
  * routes.txt
  * shapes.txt
  * stop_times.txt
  * stops.txt
  * trips.txt
Reading agency.txt
Reading calendar.txt
Reading routes.txt
Reading shapes.txt
Reading stop_times.txt
Reading stops.txt
Reading trips.txt
Converting shapes to sf objects
Processing the data
73 'speed' values are NA for shapeid '176-1'.
50 'speed' values are NA for shapeid 'A141-1'.
216 'speed' values are NA for shapeid 'R10-2'.
3724 'speed' values are NA for shapeid 'T2-1'.
Some 'speed' values are NA in the returned data.
Could not fetch https://github.com/ipeaGIT/gtfs2gps/blob/master/man/figures/equation1.png?raw=true
HttpExceptionRequest Request {
  host                 = "github.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/ipeaGIT/gtfs2gps/blob/master/man/figures/equation1.png"
  queryString          = "?raw=true"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 (ConnectionFailure Network.Socket.getAddrInfo (called with preferred socket type/protocol: AddrInfo {addrFlags = [AI_ADDRCONFIG], addrFamily = AF_UNSPEC, addrSocketType = Stream, addrProtocol = 0, addrAddress = <assumed to be undefined>, addrCanonName = <assumed to be undefined>}, host name: Just "github.com", service name: Just "443"): does not exist (nodename nor servname provided, or not known))
Error: processing vignette 'intro_to_gtfs2gps.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘intro_to_gtfs2gps.Rmd’

SUMMARY: processing the following file failed:
  ‘intro_to_gtfs2gps.Rmd’

Error: Vignette re-building failed.
Execution halted