Update app.py

app.py

@@ -164,7 +164,7 @@ qa_chain = RetrievalQA.from_chain_type(
     llm=llm,
     retriever=retriever,
     return_source_documents=True,
-    chain_type_kwargs={"input_key": "query"}
+    # chain_type_kwargs={"input_key": "query"}   # <--- REMOVED
 )
 
 # ---- Ingestion UI ----
@@ -211,7 +211,7 @@ def send_message():
         q = user_input
     st.session_state.messages.append({"role": "user", "content": user_input})
     with st.spinner("Thinking..."):
-        result = qa_chain({"query": q})
+        result = qa_chain({"question": q})  # <---- FIXED: use 'question' as input key
         answer = result['result']
         st.session_state.messages.append({"role": "assistant", "content": answer})
         docs = result['source_documents']