Thumbnail don`t work

When i add a new post and create a thumbnail ,the photo is open in new tab not in thumbnail. Whay ?

This is the code from files :

timthumb.php — > https://pastebin.com/8wTYRbdN

arhive.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<? the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=200&zc=1″ alt=”<? the_title(); ?>” />
<?php } ?>

category.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<?php the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=200&zc=1″ alt=”<?php the_title(); ?>” />
<?php } ?>

featured.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<?php the_title(); ?>”>

<img class=”post-image” src=”<?php bloginfo(‘stylesheet_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=431&zc=1″ alt=”<?php the_title(); ?>” />

<?php } ?>

index.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<?php the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=200&zc=1″ alt=”<?php the_title(); ?>” />

search.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<?php the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=200&zc=1″ alt=”<?php the_title(); ?>” />

single.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<?php the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=800&w=640&zc=1″ alt=”<?php the_title(); ?>” />

style.css

.post-header-thumbnail {

border: 2px solid #777;

margin: 0 0 25px 0;

tag.php

<?php $thumbnail = get_post_meta($post->ID, ‘Thumbnail’, true); ?>
<?php if($thumbnail !== ”) { ?>
” title=”<? the_title(); ?>” ><img class=”post-image” src=”<?php bloginfo(‘template_directory’); ?>/timthumb.php?src=<?php echo $thumbnail; ?>&h=150&w=200&zc=1″ alt=”<? the_title(); ?>” />
<?php } ?>