Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/var/www/vhosts/domain.com/subdomains/lasvegas/httpdocs/configuration.php) is not within the allowed path(s): (/var/www/vhosts/domain.com/subdomains/master/httpdocs:/tmp) in /var/www/vhosts/domain.com/subdomains/master/httpdocs/administrator/components/com_multisites/classes/site.php on line 334

Thanks in advance for reply.

You have to modify the configuration of your server to give the access to the directory.

It seems that you are using a plesk server.
See their help / Appendix A - vhost.conf configuration to modify the open_basedir value to give the access to the other directory.
To do that, you need the root login on the server.

If you don't know how to do that, contact the admniistrator of your server or you can also order our billable support at
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