Update app.py

app.py

@@ -120,7 +120,7 @@ def main():
     workflow.add_node("ask_question", lambda state: ask_question(state, retriever))
     workflow.add_node("retrieve", lambda state: retrieve(state, retriever))  
     workflow.add_node("grade_documents", lambda state: grade_documents(state, retrieval_grader_grader(llm) ))  # grade documents
-    workflow.add_node("generate", generate)  # generatae
+    workflow.add_node("generate", lambda state: generate(state,QA_chain(llm) ))  # generatae
     workflow.add_node("web_search", web_search)  # web search
     workflow.add_node("transform_query", lambda state: transform_query(state,create_question_rewriter(llm) ))