Nagvis 1.9.35 /Centreon 22.10.7

Hello, i have a problem with nagvis when i want create a new icon for exemple. I have this message

Failed to get objects: The backend with ID "centreonbroker_1" of type "" does not exist.

Here the nagvis.ini.confg

backendtype="centreonbroker"
statushost=""
dbhost="localhost"
dbport=3306
dbname="centreon_storage"
dbuser="centreon"
dbpass="centreon"
dbinstancename="default"
htmlcgi="/centreon"
 

Do you have an idea or give me a log to check?

Thank you