vramirez2016

Hi, and you upgrade to version 3.6.1 but now throws me the following error

PHP Fatal error: Class’ WP_Customize_Panel ‘not found in / home / **** / public_html / wp-content / themes / PHP Fatal error: Class’ WP_Customize_Panel’PHP Fatal error: Class’WP_Customize_Panel’/library/admin/redux-framework/inc/extensions/customizer/inc/customizer_panel.php on line 11

dódigo that the file is as follows

<?php

    /**
     * Customizer section representing widget area (sidebar).
     *
     * @package    WordPress
     * @subpackage Customize
     * @since      4.1.0
     * @see        WP_Customize_Section
     */
    class Redux_Customizer_Panel extends WP_Customize_Panel {

        /**
         * Type of this panel.
         *
         * @since  4.1.0
         * @access public
         * @var string
         */
        public $type = 'redux';

        /**
         * Constructor.
         * Any supplied $args override class property defaults.
         *
         * @since 4.0.0
         *
         * @param WP_Customize_Manager $manager Customizer bootstrap instance.
         * @param string               $id      An specific ID for the panel.
         * @param array                $args    Panel arguments.
         */
        public function __construct( $manager, $id, $args = array() ) {
            $keys = array_keys( get_object_vars( $this ) );
            foreach ( $keys as $key ) {
                if ( isset( $args[ $key ] ) ) {
                    $this->$key = $args[ $key ];
                }
            }
            $this->manager = $manager;
            $this->id      = $id;
            if ( empty( $this->active_callback ) ) {
                $this->active_callback = array( $this, 'active_callback' );
            }
            self::$instance_count += 1;
            $this->instance_number = self::$instance_count;

            $this->sections = array(); // Users cannot customize the $sections array.

            // TODO Redux addition
            if ( isset( $args['section'] ) ) {
                $this->section     = $args['section'];
                $this->description = isset( $this->section['desc'] ) ? $this->section['desc'] : '';
                $this->opt_name    = isset( $args['opt_name'] ) ? $args['opt_name'] : '';
            }
            // TODO END Redux Addition
        }

        /**
         * WP < 4.3 Render
         *
         * @since
         * @access protected
         */
        protected function render() {
            global $wp_version;
            $version = explode( '-', $wp_version );
            if ( version_compare( $version[0], '4.3', '<' ) ) {
                $this->render_fallback();
            }

        }

        protected function render_fallback() {
            $classes = 'accordion-section redux-main redux-panel control-section control-panel control-panel-' . esc_attr($this->type);
            ?>
            <li id="accordion-panel-<?php echo esc_attr( $this->id ); ?>" class="<?php echo esc_attr( $classes ); ?>">
                <h3 class="accordion-section-title" tabindex="0">
                    <?php
                        echo wp_kses( $this->title, array(
                            'em'     => array(),
                            'i'      => array(),
                            'strong' => array(),
                            'span'   => array(
                                'class' => array(),
                                'style' => array(),
                            ),
                        ) );
                    ?>
                    <span class="screen-reader-text"><?php esc_html_e( 'Press return or enter to open this panel', 'evolve' ); ?></span>
                </h3>
                <ul class="accordion-sub-container control-panel-content">
                    <table class="form-table">
                        <tbody><?php $this->render_content(); ?></tbody>
                    </table>
                </ul>
            </li>
            <?php
        }

        /**
         * Render the sections that have been added to the panel.
         *
         * @since  4.1.0
         * @access protected
         */
        protected function render_content() {
            ?>
            <li class="panel-meta accordion-section redux-panel redux-panel-meta control-section<?php if ( empty( $this->description ) ) {
                echo ' cannot-expand';
            } ?>">
                <div class="accordion-section-title" tabindex="0">
				<span class="preview-notice"><?php
                        /* translators: %s is the site/panel title in the Customizer */
                        echo sprintf( __( 'You are customizing %s', 'evolve' ), '<strong class="panel-title">' . esc_html( $this->title ) . '</strong>' );
                    ?></span>
                </div>
                <?php if ( ! empty( $this->description ) ) : ?>
                    <div class="accordion-section-content description legacy">
                        <?php echo $this->description; ?>
                    </div>
                <?php endif; ?>
            </li>
            <?php
        }

        /**
         * An Underscore (JS) template for this panel's content (but not its container).
         * Class variables for this panel class are available in the <code>data</code> JS object;
         * export custom variables by overriding {@see WP_Customize_Panel::json()}.
         *
         * @see   WP_Customize_Panel::print_template()
         * @since 4.3.0
         */
        protected function content_template() {
            ?>
            <li class="panel-meta customize-info redux-panel accordion-section <# if ( ! data.description ) { #> cannot-expand<# } #>">
                <button class="customize-panel-back" tabindex="-1">
                    <span class="screen-reader-text"><?php esc_attr_e( 'Back', 'evolve' ); ?></span></button>
                <div class="accordion-section-title">
				<span class="preview-notice"><?php
                        /* translators: %s is the site/panel title in the Customizer */
                        echo sprintf( __( 'You are customizing %s', 'evolve' ), '<strong class="panel-title">{{ data.title }}</strong>' );
                    ?></span>
                    <# if ( data.description ) { #>
                        <button class="customize-help-toggle dashicons dashicons-editor-help" tabindex="0" aria-expanded="false">
                            <span class="screen-reader-text"><?php esc_attr_e( 'Help', 'evolve' ); ?></span></button>
                        <# } #>
                </div>
                <# if ( data.description ) { #>
                    <div class="description customize-panel-description">
                        {{{ data.description }}}
                    </div>
                    <# } #>
            </li>
            <?php
        }
    }

Anyone know why?

Please help me.