What's wrong with my plugin?

Hi,

I’m creating a widget for my theme, but when I activate it WordPress is telling me that it’s generating 659 characters of unexpected output. I also can’t upload thumbnails when my widget is activated.

This is my code: `<?php

/*
Plugin Name: NightVision Tour Dates
Plugin URI: http://www.elexode.nl
Description: Display the tour dates in the sidebar
Version: 1.0
Author: Julian Quispel
Author URI: http://www.elexode.nl
License: GPL2
*/

class nv_tourdates extends WP_Widget {

function __construct() {
parent::__construct(false, $name = __(‘Social Buttons’, ‘nv_textdomain’), array( ‘description’ => __( ‘Display your social media in the sidebar’,’nv_textdomain’ ) ) );
}

function form( $instance) {
if( $instance) {
$title = esc_attr($instance[‘title’]);
$range = esc_attr($instance[‘range’]);
} else {
$title = ‘Tour Dates’;
$range = 5;
}
?>

<p>
<label for=”<?php echo $this->get_field_id(‘title’); ?>”><?php _e(‘Title:’, ‘nv_textdomain’); ?></label>
<input class=”widefat” id=”<?php echo $this->get_field_id(‘title’); ?>” name=”<?php echo $this->get_field_name(‘title’); ?>” type=”text” value=”<?php echo $title; ?>” />
</p>

<p>
<label for=”<?php echo $this->get_field_id(‘range’); ?>”><?php _e(‘Number of Dates:’, ‘nv_textdomain’); ?></label>
<input class=”widefat” id=”<?php echo $this->get_field_id(‘range’); ?>” name=”<?php echo $this->get_field_name(‘range’); ?>” min=”1″ type=”number” value=”<?php echo $range; ?>” />
</p>
<?php
}

function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance[‘title’] = strip_tags($new_instance[‘title’]);
$instance[‘range’] = strip_tags($new_instance[‘range’]);
return $instance;
}

function widget($args, $instance) {
echo $args[‘before_widget’];
echo $args[‘before_title’];
echo $instance[‘title’];
echo $args[‘after_title’];
$my_query = new WP_Query(‘posts_per_page=’.$range.’&post_type=tourdates’);
while ($my_query->have_posts()) : $my_query->the_post(); ?>
<div class=”side-tour-time”><?php
$date = rwmb_meta(‘nv_fdate’);
$date = str_replace(‘/’, ‘-‘, $date);
$time = strtotime($date);
echo date(‘j F Y’, $time);
?> </div>
<h3 class=”side-tour-title”><?php the_title(); ?></h3>
<?php endwhile; wp_reset_query(); ?>
<div class=”side-tour-more”>
<a href=”<?php echo get_post_type_archive_link( ‘tourdates’ ); ?>”>More dates</a>
</div>
<?php echo $args[‘after_widget’];

}
}

// register widget
add_action(‘widgets_init’, function(){
register_widget(‘nv_tourdates’);
}
);
?>

<style type=”text/css”>

input[type=”number”], input[type=”text”] {
margin:5px 0;
}

.side-tour-time {
padding:5px;
background:rgba(161,40,145,0.5);
border-radius:3px;
font-weight:bold;
margin:2px 0;
}

.side-tour-title {
margin:8px 0;
}

.side-tour-more {
display:table;
}

.side-tour-more a {
text-decoration:none;
float:left;
border-radius:3px;
background:rgba(161,40,145,0.5);
color:white;
padding:5px;
margin-top:5px;
-o-transition:.5s;
-ms-transition:.5s;
-moz-transition:.5s;
-webkit-transition:.5s;
transition:.5s;
}

.side-tour-more a:hover {
background:white;
color:purple;
}
</style>`

Hope you can help me 🙂