Running examples in ‘urltools-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: suffix_extract
> ### Title: extract the suffix from domain names
> ### Aliases: suffix_extract
> 
> ### ** Examples
> 
> 
> # Using url_parse
> domain_name <- url_parse("http://en.wikipedia.org")$domain
> suffix_extract(domain_name)
              host subdomain    domain suffix
1 en.wikipedia.org        en wikipedia    org
> 
> # Using domain()
> domain_name <- domain("http://en.wikipedia.org")
> suffix_extract(domain_name)
              host subdomain    domain suffix
1 en.wikipedia.org        en wikipedia    org
> 
> #Relying on a fresh version of the suffix dataset
> suffix_extract(domain("http://en.wikipedia.org"), suffix_refresh())
Warning in readLines(connection) :
  line 7783 appears to contain an embedded nul
Warning in readLines(connection) :
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  line 10284 appears to contain an embedded nul
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  line 10286 appears to contain an embedded nul
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  line 10287 appears to contain an embedded nul
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  line 10288 appears to contain an embedded nul
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  line 10289 appears to contain an embedded nul
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  line 10290 appears to contain an embedded nul
Warning in readLines(connection) :
  line 10291 appears to contain an embedded nul
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  line 10292 appears to contain an embedded nul
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  line 10293 appears to contain an embedded nul
Warning in readLines(connection) :
  line 10294 appears to contain an embedded nul
Warning in readLines(connection) :
  line 10295 appears to contain an embedded nul
Warning in readLines(connection) :
  line 10296 appears to contain an embedded nul
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  line 10298 appears to contain an embedded nul
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  line 10308 appears to contain an embedded nul
Warning in readLines(connection) :
  line 10309 appears to contain an embedded nul
Warning in readLines(connection) :
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  line 10311 appears to contain an embedded nul
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  line 10316 appears to contain an embedded nul
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  line 10320 appears to contain an embedded nul
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  line 10321 appears to contain an embedded nul
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  line 10322 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 7783 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 9575 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 9588 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 9589 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 10296 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 6368 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted