Support » Fixing WordPress » Error message on saving post

  • Please can someone help with this? I am getting this message when I save a post.Can’t figure out how to fix it.

    Warning: call_user_func(extract_terms::update_taxonomy_count) []: First argument is expected to be a valid callback in /home/name/public_html/lose-weight/wp-includes/taxonomy.php on line 1769

    Warning: Cannot modify header information – headers already sent by (output started at /home/name/public_html/lose-weight/wp-includes/taxonomy.php:1769) in /home/name/public_html/lose-weight/wp-includes/pluggable.php on line 865


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  • Hi,

    Reinstall wp-admin and wp-includes folder along with all the files and folders. Also check with these options:

    If the problem still persists then check with this option:

    1. Download the file mentioned in the error message.
    2. Open that file in a plain text editor
    3. Check that the very first characters are <?php
    4. Check that the very last characters are ?>
    5. Place the cursor between the ? and >
    6. Now press the DELETE key on your computer and keep that key pressed for at least 15 seconds.
    7. Now type > and
    8. Save without pressing any other key at all.


    Shane G.

    Hi thanks for your help. I really appreciate it!

    The problem wasn’t fixed with this but it did give me a clue as to what might be wrong. I deactivated all the plugins then gradually reactivated them. It was a plugin causing the problem. Maybe this will help someone else.



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