Update utils.py

utils.py

@@ -13,8 +13,7 @@ def split_with_source(text, source):
     splitter = CharacterTextSplitter(
         separator = "\n",
         chunk_size = 1024,
-        chunk_overlap  = 0,
-        length_function = 512,
+        chunk_overlap  = 512,
         add_start_index = True,
     )
     documents = splitter.create_documents([text])