i have lots of user and data in cdcl.dev databases, but in meeting.dev one have default user only and dose not have any data.
so when i brows meeting.dev and used the user of cdcl.dev, i can open and display all the data of cdcl.dev.
And then i changed the database name in site_config.json file of cdcl.dev and try to brows both site but is said database error. this shows it is using cdcl.dev database.
I am not quite sure if I can follow… If you access http://meeting.dev, it should open the site from the respective ./sites. And in there, it will load the corresponding db connection. Maybe it helps to check whether the http request arrives properly in the nginx log files. And control your multitenancy configuration (refer to Multitenant Setup · frappe/bench Wiki · GitHub)