Failed to start plugin matterbridge-zigbee2mqtt: Error:

Hi. I have installed the matterbridge to home assistant OS (hosted on Proxmox)
when I try to add the plugin matterbridge-zigbee2mqtt I get an error
“Error saving config file for plugin matterbridge-zigbee2mqtt. Wrong config data content: [object Object]”
obviously I have an error in the config file but not sure where this is.What info do you need to be able to help me
MQtt is on Proxmox, zigbee2mqtt in in Home assistent as addon

Regards

Please ignore this as I have just found this feature is to be discontinued