From b924d87293b98dab85083ffd7b6723db1c815557 Mon Sep 17 00:00:00 2001
From: Erez Shinan <erezshin+git@gmail.com>
Date: Fri, 3 Aug 2018 04:37:47 +0300
Subject: [PATCH] Fix error

---
 lark/load_grammar.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lark/load_grammar.py b/lark/load_grammar.py
index 8f924c5..455116f 100644
--- a/lark/load_grammar.py
+++ b/lark/load_grammar.py
@@ -598,8 +598,9 @@ class GrammarLoader:
         try:
             tree = self.canonize_tree.transform( self.parser.parse(grammar_text+'\n') )
         except UnexpectedCharacters as e:
+            context = e.get_context(grammar_text)
             raise GrammarError("Unexpected input %r at line %d column %d in %s" %
-                               (e.context, e.line, e.column, grammar_name))
+                               (context, e.line, e.column, grammar_name))
         except UnexpectedToken as e:
             context = e.get_context(grammar_text)
             error = e.match_examples(self.parser.parse, {