--- a/lucene/src/luan/modules/lucene/Web_search.luan	Mon Jun 15 01:22:58 2015 -0600
+++ b/lucene/src/luan/modules/lucene/Web_search.luan	Mon Jun 15 17:30:28 2015 -0600
@@ -1,13 +1,13 @@
 local Luan = require "luan:Luan"
-local load = Luan.load
-local pairs = Luan.pairs
-local ipairs = Luan.ipairs
-local range = Luan.range
-local to_string = Luan.to_string
+local error = Luan.error
+local pairs = Luan.pairs or error()
+local ipairs = Luan.ipairs or error()
+local range = Luan.range or error()
+local to_string = Luan.to_string or error()
 local Io = require "luan:Io"
 local Http = require "luan:http/Http"
 local String = require "luan:String"
-local string_to_number = String.string_to_number
+local string_to_number = String.to_number or error()
 local Html = require "luan:Html"
 
 local M = {}