Added handling for an EOF exception that can occur when using the django file-based cache.

 - Legacy-Id: 15769

Author: levkowetz

ietf/doc/models.py

@@ -497,7 +497,10 @@ def htmlized(self):
         if text:
             cache = caches['htmlized']
             cache_key = name.split('.')[0]
-            html = cache.get(cache_key)
+            try:
+                html = cache.get(cache_key)
+            except EOFError:
+                html = None
             if not html:
                 # The path here has to match the urlpattern for htmlized
                 # documents in order to produce correct intra-document links