The database server could be connected to (which means your username and password is okay) but the webmul22_radkrishna22
database could not be selected.
webmul22_naradha04
have permission to use the webmul22_radkrishna22
database?username_webmul22_radkrishna22
. Could that be the problem?If you do not know how to set up a database you should contact your host. If all else fails you may find help at the WordPress support forums.