Bug in Appearance Options

Changed the function at line 40 of class-visody-options-pages.php to the following, which fixed the error in the Appearance page. However, Viewer Control buttons in the gallery viewport still do not work.

    function body() {
        $option_group = $this->options[ 'id' ];
        ?><div class="wrap">
        <h1><?php echo esc_attr( $this->options['title'] ); ?></h1>
        <form method="POST" action="options.php">
            <?php
                if ( isset( $this->options['tabs'] ) && is_array( $this->options['tabs'] ) && !empty( $this->options['tabs'] ) ) {

                    // print tabs
                    $tabs = wp_list_pluck( $this->options[ 'tabs' ], 'name' );
                    $current = isset( $_GET['tab'] ) && in_array( sanitize_key( $_GET['tab'] ), array_map( 'sanitize_key', $tabs ) )
                        ? sanitize_key( $_GET['tab'] )
                        : sanitize_key( $tabs[0] );
                    $option_group = $option_group . $current;
                    ?>
                    <nav class="nav-tab-wrapper">
                        <?php
                        foreach( $tabs as $name ){
                            $slug = sanitize_key( $name );
                            ?>
                            <a class="nav-tab<?php echo $slug === $current ? ' nav-tab-active' : '' ?>" href="<?php echo add_query_arg( array( 'page' => $this->options[ 'id' ], 'post_type' => $this->options[ 'post_type' ], 'tab' => $slug ), '' ) ?>"><?php echo $name ?></a>
                            <?php
                        }
                        ?>
                    </nav>
                    <?php
                }
                settings_fields( $option_group );
                do_settings_sections( $option_group );
                submit_button();
            ?>
        </form>
        <script>
            jQuery(document).ready(function($) {
                $('.color-picker').each(function(){
                    $(this).wpColorPicker();
                });
            });
        </script>
        </div>
        <?php
    }