Update src/app.py

src/app.py

@@ -348,7 +348,8 @@ with tab1:
                     docs = rag_engine.search_knowledge_base(
                         query=prompt, 
                         username=st.session_state.username,
-                        index_name=st.session_state.active_index
+                        index_name=st.session_state.active_index,
+                        embed_model_name=st.session_state.active_embed_model
                     )
                     if docs:
                         sys_p = (