Update app.py

app.py

@@ -106,7 +106,7 @@ class DocumentProcessor:
         try:
             embeddings = MODEL.encode(
                 all_chunks,
-                batch_size=512,
+                batch_size=256, #512
                 convert_to_tensor=True,
                 show_progress_bar=False
             ).cpu().numpy().astype('float32')
@@ -192,7 +192,7 @@ class DocumentProcessor:
 processor = DocumentProcessor()
 
 # Gradio interface with improved error handling
-def ask_question(question, chat_history):
+def ask_question(question, chat_history=''):
     if not question.strip():
         return chat_history + [("", "Please enter a valid question")]