Fatal ERROR Version 4.2.2

ERROR breaks my WordPress complete
$notices = Notices::getInstance();

(u dont use $notices in the functionm why u call it?)

public function plugin_actions()
{
$this->plugin_path = plugin_dir_path(EMR_ROOT_FILE);
//$this->plugin_url = plugin_dir_url(EMR_ROOT_FILE);

            // loads the dismiss hook.
            $notices = Notices::getInstance();

  // init plugin
    add_action('admin_menu', array($this,'menu'));
            add_action('submenu_file', array($this, 'hide_sub_menu'));

            add_action( 'current_screen', array($this, 'setScreen') ); // annoying workaround for notices in edit-attachment screen
    add_action('admin_enqueue_scripts', array($this,'admin_scripts'));


  // content filters
    add_filter('media_row_actions', array($this,'add_media_action'), 10, 2);
    add_action('attachment_submitbox_misc_actions', array($this,'admin_date_replaced_media_on_edit_media_screen'), 91);

  // notices

  // editors
    add_action('add_meta_boxes_attachment', array($this, 'add_meta_boxes'), 10, 2);
    add_filter('attachment_fields_to_edit', array($this, 'attachment_editor'), 10, 2);

  /** Just after an image is replaced, try to browser decache the images */
    if (isset($_GET['emr_replaced']) && intval($_GET['emr_replaced'] == 1)) {
        add_filter('wp_get_attachment_image_src', array($this, 'attempt_uncache_image'), 10, 4);

      // adds a metabox to list thumbnails. This is a cache reset hidden as feature.
      //add_action( 'add_meta_boxes', function () {  );
        add_filter('postbox_classes_attachment_emr-showthumbs-box', function ($classes) {
            $classes[] = 'closed';
            return $classes;
        });
    }
}