Update app.py

app.py

@@ -1,16 +1,21 @@
 import streamlit as st
 from crewai import Agent, Task, Crew
-from langchain_google_genai import ChatGoogleGenerativeAI
-from dotenv import load_dotenv
+from langchain_community.llms import HuggingFaceHub
 import os
 
-from langchain_community.llms import HuggingFaceHub
+# Retrieve the API token from environment variables
+huggingfacehub_api_token = os.getenv('HUGGINGFACEHUB_API_TOKEN')
 
+if not huggingfacehub_api_token:
+    raise ValueError("HUGGINGFACEHUB_API_TOKEN environment variable not set")
+
+# Initialize HuggingFaceHub with the API token
 llm = HuggingFaceHub(
     repo_id="HuggingFaceH4/zephyr-7b-beta",
-    
+    huggingfacehub_api_token=huggingfacehub_api_token,
     task="text-generation",
 )
+
 # Define Agents
 planner = Agent(
     role="Content Planner",