Update utils.py

utils.py

@@ -11,8 +11,7 @@ def split_with_source(text, source):
     splitter = CharacterTextSplitter(
         separator = "\n",
         chunk_size = 512,
-        chunk_overlap  = 0,
-        length_function = len,
+        chunk_overlap  = 172,
         add_start_index = True,
     )
     documents = splitter.create_documents([text])