@Lewis-Adams when you added the subdomain did you make sure to edit the url in config.json and on NGINX?
as @scottalanmiller mentioned this will be the main cause for the disconnection
Earlier I installed a search plugin on nodebb, and then I restarted the nodebb service, it shows that the nodebb service has been restarting. I searched for it. I can disable the plugin via ./nodebb reset -p, but my nodebb is installed. In the container, what can I do to knock this order?