Hi zafer,
Can you give some details on when the error started? Did you upgrade, were you editing a file, is it only on a certain page, etc.
What’s the code you’re using to retrieve the posts?
If you’ve got a custom built theme, there might also be a “Call to Action” link option or something along those lines.
Do you mean the page title? You could create a new page template to remove it. You could start by copying the current page template, and then giving the new one a different name (ex. “No title”). You’d want to remove a line that looks like:
<h1 class="post-title entry-title"><?php the_title(); ?></h1>
and then assign the new template to the page you’re working on.