add default values when not used

app/config.py

@@ -9,6 +9,8 @@ os.environ["WEAVE_CAPTURE_CODE"] = "false"
 if os.getenv("HUGGINGFACE_DEMO"):
     OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
     ANTHROPIC_API_KEY = os.getenv("ANTHROPIC_API_KEY")
+    REDIS_PASSWORD = ""
+    REDIS_USE_SSL = False
 else:
     from app.aws.secrets import get_secret