Thanks for your help, i put in the URL but its saying " Your version is up to date. ". Still same error when i go to update plugins. 

I have log.php in that folder though nothing showing in the file its just blank.

<?php
/** * EXHIBIT A. Common Public Attribution License Version 1.0 * The contents of this file are subject to the Common Public Attribution License Version 1.0 (the “License”); * you may not use this file except in compliance with the License. You may obtain a copy of the License at * http://www.oxwall.org/license. The License is based on the Mozilla Public License Version 1.1 * but Sections 14 and 15 have been added to cover use of software over a computer network and provide for * limited attribution for the Original Developer. In addition, Exhibit A has been modified to be consistent * with Exhibit B. Software distributed under the License is distributed on an “AS IS” basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language * governing rights and limitations under the License. The Original Code is Oxwall software. * The Initial Developer of the Original Code is Oxwall Foundation (http://www.oxwall.org/foundation). * All portions of the code written by Oxwall Foundation are Copyright (c) 2011. All Rights Reserved.
 * EXHIBIT B. Attribution Information * Attribution Copyright Notice: Copyright 2011 Oxwall Foundation. All rights reserved. * Attribution Phrase (not exceeding 10 words): Powered by Oxwall community software * Attribution URL: http://www.oxwall.org/ ;* Graphic Image as provided in the Covered Code. * Display of Attribution Information is required in Larger Works which are defined in the CPAL as a work * which combines Covered Code or portions thereof with code not governed by the terms of the CPAL. */
/** * @author Sardar Madumarov <madumarov@gmail.com> * @package ow_core * @since 1.0 */class UPDATE_Log{    const TYPE = 'type';    const KEY = 'key';    const TIME_STAMP = 'timeStamp';    const MESSAGE = 'message';
    /**     * Class instances.     *     * @var array     */    private static $classInstance;
    /**     * Returns logger object.     *     * @param string $type     * @return UPDATE_Log     */    public static function getInstance()    {        if( self::$classInstance === null )        {            self::$classInstance = new self();        }
        return self::$classInstance;    }    /**     * Log type.     *     * @var string     */    private $type;    /**     * Log entries.     *     * @var array     */    private $entries = array();
    /**     * Constructor.     *     * @param string $type     * @param OW_LogWriter $logWriter     */    private function __construct()    {        $this->type = 'update';    }
    /**     * Adds log entry.     *     * @param string $message     * @param string $key     */    public function addEntry( $message, $key = null )    {        $this->entries[] = array(self::TYPE => $this->type, self::KEY => $key, self::MESSAGE => $message, self::TIME_STAMP => time());            }
    /**     * Returns all log entries.     *      * @return array     */    public function getEntries()    {        return $this->entries;    }}

please paste it and try again to update the plugins.