diff --git a/util/data_util.py b/util/data_util.py
index ce2fad0..be46097 100644
--- a/util/data_util.py
+++ b/util/data_util.py
@@ -186,7 +186,8 @@ def parse_page_num(page_list):
     pages = []
     total = []
     for page in page_list:
-        join = ''.join(page)
+        page_texts = [p.get('text', '') for p in page]
+        join = ''.join(page_texts)
         numbers = re.findall(r'\d+', join)
         pages.append(min(numbers))
         total.append(max(numbers))