Update utils.py

utils.py

@@ -1,9 +1,9 @@
 import pandas as pd
 import csv
 import io
-# Changed LLM import to HuggingFaceEndpoint
 from langchain_community.llms import HuggingFaceEndpoint
-from langchain_community.agent_toolkits import create_pandas_dataframe_agent
+# FIX: Changed import path from langchain_community to langchain_experimental
+from langchain_experimental.agents import create_pandas_dataframe_agent
 from dotenv import load_dotenv
 import os
 
@@ -59,10 +59,13 @@ def query_agent(uploaded_file_content: bytes, query: str, hf_api_token: str) ->
         )
 
         # 3. Create the Pandas DataFrame Agent
+        # CRITICAL SECURITY NOTE: Must set allow_dangerous_code=True 
+        # as LangChain now requires an explicit opt-in for code execution agents.
         agent = create_pandas_dataframe_agent(
             llm,
             df,
             verbose=True,
+            allow_dangerous_code=True, # Added to prevent runtime ValueError
             # Include a system prompt to guide the agent's behavior
             agent_kwargs={
                 "system_message": (