Running examples in 'aurelius-Ex.R' failed
The error most likely occurred in:

> ### Name: read_pfa
> ### Title: read_pfa
> ### Aliases: read_pfa
> 
> ### ** Examples
> 
> # literal JSON string  (useful for small examples)
> toy_model <- read_pfa('{"input":"double","output":"double","action":[{"+":["input",10]}]}')
> 
> # from a local path, must be wrapped in "file" command to create a connection
> local_model <- read_pfa(file(system.file("extdata", "my-model.pfa", package = "aurelius")))
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
Warning in readChar(x, 1, useBytes = TRUE) :
  text connection used with readChar(), results may be incorrect
> 
> # from a url (split on two lines so not to exceed 100 char wide during install)
> url_model <- read_pfa(url(paste0('https://raw.githubusercontent.com/ReportMort/hadrian', 
+                      '/feature/add-r-package-structure/aurelius/inst/extdata/my-model.pfa')))
Warning in open.connection(x) :
  InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
Error in open.connection(x) : cannot open the connection
Calls: read_pfa -> open -> open.connection
Execution halted