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 4252 appears to contain an embedded nul
Warning in readLines(connection) :
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Warning in readLines(connection) :
  line 8370 appears to contain an embedded nul
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  line 8371 appears to contain an embedded nul
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Warning in readLines(connection) :
  line 8375 appears to contain an embedded nul
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  line 8383 appears to contain an embedded nul
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  line 8384 appears to contain an embedded nul
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  line 8386 appears to contain an embedded nul
Warning in readLines(connection) :
  line 8388 appears to contain an embedded nul
Warning in readLines(connection) :
  line 8389 appears to contain an embedded nul
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  line 8390 appears to contain an embedded nul
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  line 8391 appears to contain an embedded nul
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  line 8392 appears to contain an embedded nul
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  line 8393 appears to contain an embedded nul
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  line 8394 appears to contain an embedded nul
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  line 8395 appears to contain an embedded nul
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  line 8396 appears to contain an embedded nul
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  line 8401 appears to contain an embedded nul
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  line 8403 appears to contain an embedded nul
Warning in readLines(connection) :
  line 8404 appears to contain an embedded nul
Warning in readLines(connection) :
  line 8405 appears to contain an embedded nul
Warning in readLines(connection) :
  line 8406 appears to contain an embedded nul
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  line 8407 appears to contain an embedded nul
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  line 8408 appears to contain an embedded nul
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  line 8409 appears to contain an embedded nul
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  line 8412 appears to contain an embedded nul
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  line 8413 appears to contain an embedded nul
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  line 8416 appears to contain an embedded nul
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  line 8417 appears to contain an embedded nul
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  line 8418 appears to contain an embedded nul
Warning in grep(pattern = "^//", x = results) :
  input string 4252 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 6566 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 8374 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 8381 is invalid in this locale
Warning in grep(pattern = "^//", x = results) :
  input string 8382 is invalid in this locale
Error in gsub(x = suffixes, pattern = "*.", replacement = "", fixed = TRUE) : 
  input string 3801 is invalid in this locale
Calls: suffix_extract -> suffix_load -> gsub
Execution halted