Purab

May be your site is hacked by somebody. You should take action immediately. This is happened due to mysql database issue. somebody fired wrong query on your mysql database.
You can solve this issue using mysql database queries. Or if you have your old database backup then you can restore your website. you should check the wp_post table carefully and check the post_type column very carefully.

I can give you exact solution but I need to check your database. sure that is related with database only.

[email removed per forum rules, also please note that running a domain with ‘WordPress’ in the TLD is in violation of the WordPress Foundation Copyright. Read https://wordpressfoundation.org/trademark-policy/ for details]

Just try following code. This will solve your issue.

margin-top: 30px;
width: 100px;
height: 100px;
background: url("images/RemoteImage_1.png") no-repeat 0 0;

If you are still facing issue then write to me at [email address removed]

which wordpress version are you are using earlier. do you know that. you should take backup of your database and download older version and set it back. Still If you need free help then write to me at [Email moderated. Please keep discussions on the forum.]

You used the global $more variable as 0 value means $more to 0 in order to only get the first part of the post.
You should remove the global $more variable that will solve your issue. if you still facing issue than you can chat with me at [Email address moderated. Please keep discussions on the forum.]

you should use the following code.

$loop = new WP_Query( array( 'post_type' => 'product', 'posts_per_page' => 10 ) );
while ( $loop->have_posts() ) : $loop->the_post();
 the_title();
the_content();
global $post;
 $custom = get_post_custom($post->ID);
echo $thumbnail_url = $custom["thumbnail_url"][0];
echo $product_info = $custom["product_info"][0];
echo $video_code = $custom["video_code"][0];
 echo '<div>';
 the_content();
 echo '</div>';
endwhile;

For more deatils you can use the following article
[Link moderated]

I already solved this issue for more information check my article. [Link moderated.]

Check following article for uploading file through custom_post_type for custom meta box [Link moderated.]