Update app.py

app.py

@@ -42,7 +42,7 @@ app.add_middleware(
 GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
 if not GEMINI_API_KEY:
     logger.error("GEMINI_API_KEY is not set")
-    raise HTTPException(status_code=500, detail="GEMINI_API_KEY is not set")
+    raise ValueError("GEMINI_API_KEY environment variable is not set")
 
 genai.configure(api_key=GEMINI_API_KEY)
 MODEL_NAME = "gemini-1.5-flash"  # Use a valid model (verify in Google's documentation)