error after update : Warning: Missing argument 2 for wpdb::prepare()

I update the WP version, and I am getting this error on top of the site and the admin section.

Warning: Missing argument 2 for wpdb::prepare(), called in /home/content/65/6388800/html/domain/cms/wp-content/themes/cts/includes/widget_areas.php on line 154 and defined in /home/content/65/6388800/html/domain/cms/wp-includes/wp-db.php on line 1147

> this I have in the file on line widget_areas.php

/**
 * Register all custom sidebars
 *
 * @author Ohad Raz
 * @return Void
 */
function register_theme_sidebars_dynamic(){
    global $wpdb;
	//post and pages sidebars
	$widgetized_pages = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = 'omc_page_sidebar'"));

	if($widgetized_pages){
	    foreach($widgetized_pages as $w_page){
	        $widget_id = strtolower(str_replace(' ', '_', $w_page));
	        register_sidebar(array(
	            'name' => $w_page,
	            'id'   => 'jw_widgetsection_'.$widget_id,
	            'description'   => '',
	            'before_widget' => '<li id="%1$s" class="omc-widget %2$s">',
	            'after_widget' => '',
	            'before_title' => '<h3 class="widgettitle"><span>',
	            'after_title' => '</span></h3>'
	        ));
	     }// For each
	}//End If

> and bellow from wp-db.php

function prepare( $query, $args ) {
		if ( is_null( $query ) )
			return;

		// This is not meant to be foolproof -- but it will catch obviously incorrect usage.
		if ( strpos( $query, '%' ) === false ) {
			_doing_it_wrong( 'wpdb::prepare', sprintf( __( 'The query argument of %s must have a placeholder.' ), 'wpdb::prepare()' ), '3.9' );
		}

		$args = func_get_args();
		array_shift( $args );
		// If args were passed as an array (as in vsprintf), move them up
		if ( isset( $args[0] ) && is_array($args[0]) )
			$args = $args[0];
		$query = str_replace( "'%s'", '%s', $query ); // in case someone mistakenly already singlequoted it
		$query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting
		$query = preg_replace( '|(?<!%)%f|' , '%F', $query ); // Force floats to be locale unaware
		$query = preg_replace( '|(?<!%)%s|', "'%s'", $query ); // quote the strings, avoiding escaped strings like %%s
		array_walk( $args, array( $this, 'escape_by_ref' ) );
		return @vsprintf( $query, $args );
	}

[Moderator Note: Please post code & markup between backticks or use the code button. Your posted code may now have been damaged by the forum’s parser.]

<< Can anyone help?

Thanks in advance.