Can't go through the configuration

[Jozomi]

Dear All, i'm deeply sorry to bother but i'm new in HA and i did follow all the step of the installation.
Installed MQTT
Intalled AIR CON
when i go into the configuration, i put my mqtt user and password and it is asking for a port and put 1883 (the mosquito one) but it says
Failed to save add-on configuration, Missing option 'app' in root in HiSense Air Conditioners (c34eddb3_hisense_ac). Got {'log_level': 'INFO', 'mqtt_host': 'core-mosquitto', 'mqtt_port': 1883, 'mqtt_user': 'moustique', 'mqtt_pass': '', 'port': 1883}

(i deleted my password)

What should i do?

thx a lot