Domain mapping Plugin : syntax error, unexpected $end


I was trying to install domain mapping on one of my website from the site’s plugin section itself.

But instead of successfully installing the site, it started showing the following error:

Parse error: syntax error, unexpected $end in /.../public_html/wp-admin/index.php on line 132

I checked the index.php file, whole file contains only 131 lines.

I googled the problem and the results were as follows:

The error is due to domain mapping plugin, would you like to assist me in solving the issue.