Update app.py

app.py

@@ -52,8 +52,8 @@ def answer_query(query):
         return "❌ Please upload and process a PDF first."
 
     try:
-        query_vec = model.encode([query])
-        D, I = stored_index.search(np.array([query_vec]), k=3)
+        query_vec = model.encode(query).reshape(1, -1)
+        D, I = stored_index.search(query_vec, k=3)
         top_chunks = [stored_chunks[i] for i in I[0]]
 
         context = "\n\n".join(top_chunks)