fix api issue

app.py

@@ -1,7 +1,13 @@
 import gradio as gr
 from langchain_groq import ChatGroq
 from langchain.schema import SystemMessage, HumanMessage
-from config import GROQ_API_KEY
+import os
+
+# Securely fetch API Key from environment variable
+GROQ_API_KEY = os.getenv("GROQ_API_KEY")
+
+if not GROQ_API_KEY:
+    raise ValueError("⚠️ GROQ_API_KEY is missing! Set it in your environment variables.")
 
 # Initialize the Groq Model
 llm = ChatGroq(