Title of Last Post Becomes Title for All Posts

do you remember editing anything before that happened?
or did you activate a new plugin?

otherwise, there is probably something gone wrong in archive.php of your theme:

could you paste the code of archive.php into a https://wordpress.pastebin.com/ and post the link to it here?

I did paste this piece of code

.path {
color:#FFFFFF;
font:1.6em Pristina,sans-serif;
}

into my style.css sheet, and also activated the Edit Page, List Design plugin. I have since removed both the code and deactivated the plugin, but the problem is persisting.

Also,

I pasted the code as you requested right here

https://wordpress.pastebin.com/PtM1YMqm

edit this line <?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?> with <?php //$post = $posts[0]; // Hack. Set $post so that the_date() works. ?>

Thank you chinmoy29. Your post completely resolved my problem ??

you’re welcome.:)

regards
Chinmoy