PluginException.php

<?php
/**
 * Piwik - free/libre analytics platform
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

namespace Piwik\Plugin;

class PluginException extends \Exception
{
    public function __construct($pluginName, $message)
    {
        parent::__construct("There was a problem installing the plugin " . $pluginName . ": " . $message . "
				If this plugin has already been installed, and if you want to hide this message</b>, you must add the following line under the
				[PluginsInstalled]
				entry in your config/config.ini.php file:
				PluginsInstalled[] = $pluginName");
    }
}