Am getting "An unexpected error occurred. Something may be wrong with WordPress"

Copy paste the below lines into wp_config.php file:

define(‘WP_PROXY_HOST’, ‘proxy.url.com’);
define(‘WP_PROXY_PORT’, ‘1234’);
define(‘WP_PROXY_USERNAME’, ”);
define(‘WP_PROXY_PASSWORD’, ”);
define(‘WP_PROXY_BYPASS_HOSTS’, ‘localhost’);

and change the define(‘WP_DEBUG’, TRUE);
It works.

I got the same error when i tried to add new themes and plugins for my new site. And i got to know that this error is because of system proxy connection problems with wordpress. To resolve the issue, we have to configure wordpress according to our proxy settings. I did the same as above and it worked.