Getting blank page after trying to comment

Okay; one thing I was hesitant to do because I wasn’t sure if I’d lose formatting or not, was to change back to the default theme. In doing so, I’ve discovered that commenting DOES work when switching back to the default theme. So there’s something wrong with the modified theme I’m using.

Can someone point me in the right direction then? What are my first steps in trying to fix the blank wp-comments-post.php page? Where should I begin?

Thank you to those who will respond!

FYI… I was having this same problem, and I realized that I was missing this line of code near my submit button:

<?php comment_id_fields(); ?>

So in my comments.php file, it looks like this:

<p><button type="submit" name="submit" id="sub">Submit</button>
        <?php comment_id_fields(); ?>
        <input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>"></p>

In the Default WP theme, the code looks like this:

<p><input name="submit" type="submit" id="submit" tabindex="5" value="Submit Comment" />
<?php comment_id_fields(); ?>
</p>

100% working solution for the problem, visit

https://www.princeblog.net/index.php/troubleshoot/wordpress-blank-page-after-posting-a-comment-wp-comment-post-php

Hi,
https://www.princeblog.net has now been shifted to https://www.crazybulb.com
and above post to
https://www.crazybulb.com/troubleshoot/wordpress-blank-page-after-posting-a-comment-wp-comment-post-php/