Update app.py

app.py

@@ -11,7 +11,7 @@ def construct_index(directory_path):
     # setup parameters
     max_input_size = 4096
     num_outputs = 512
-    max_chunk_overlap = 20
+    max_chunk_overlap = 0.2
     chunk_size_limit = 600
     # create a prompt helper
     prompt_helper = PromptHelper(max_input_size, num_outputs, max_chunk_overlap, chunk_size_limit=chunk_size_limit)