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 3248 appears to contain an embedded nul
Warning in readLines(connection) :
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Warning in readLines(connection) :
  line 3280 appears to contain an embedded nul
Warning in readLines(connection) :
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  line 3288 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3290 appears to contain an embedded nul
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  line 3293 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3294 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3298 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3300 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3301 appears to contain an embedded nul
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  line 3314 appears to contain an embedded nul
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  line 3315 appears to contain an embedded nul
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  line 3316 appears to contain an embedded nul
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Warning in readLines(connection) :
  line 3323 appears to contain an embedded nul
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  line 3326 appears to contain an embedded nul
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  line 3328 appears to contain an embedded nul
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  line 3329 appears to contain an embedded nul
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  line 3333 appears to contain an embedded nul
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  line 3337 appears to contain an embedded nul
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  line 3339 appears to contain an embedded nul
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  line 3346 appears to contain an embedded nul
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Warning in readLines(connection) :
  line 3355 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3356 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3363 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3367 appears to contain an embedded nul
Warning in readLines(connection) :
  line 3371 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4265 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4266 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4267 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4268 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4269 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4270 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4271 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4272 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4273 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4274 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4275 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4276 appears to contain an embedded nul
Warning in readLines(connection) :
  line 4277 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 3248 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 3249 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 3250 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 3251 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 3252 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 2901 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted