update

app.py

@@ -20,10 +20,10 @@ from PIL import Image
 load_dotenv()
 
 # MQTT Configuration
-HOST = os.getenv("host")
-PORT = int(os.getenv("port"))
-USERNAME = os.getenv("username")
-PASSWORD = os.getenv("password")
+HOST = os.getenv("host", "mqtt.bambulab.com")
+PORT = int(os.getenv("port", "8883"))
+USERNAME = os.getenv("username", "bblp")
+PASSWORD = os.getenv("password", "bblp")
 PRINTER_SERIAL = os.getenv("PRINTER_SERIAL", "0309CA471800852")
 
 # Setup logging