出现这个是什么意思呢?
Can’t select database
We were able to connect to the database server (which means your username and password is okay) but not able to select the unionla database.
Are you sure it exists?
Does the user allunion have permission to use the unionla database?
On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?
If you don't know how to setup a database you should contact your host. If all else fails you may find help at the WordPress Support Forums.