Unable to add plugins in WP

Hi, I am unable to add plugins, and the themes and plugins section reacts really slowly. I got this: “An unexpected error occurred. Something may be wrong with or this server’s configuration. If you continue to have problems, please try the support forums”. How can I fix this?

Enable WP_DEBUG in wp-config.php to true and reload your website. You will get the error message of the issue which is making your site slow.

You will also try to oversite all core files of Your WordPress installation.