Fatal Error

you missed at least one file.

count on that any time you see:

Fatal error: Call to undefined function …

that youre missing a file.

Hi,
Thanks for your response.

I am copying from the same wp-includes folder that was with the WordPress files I have been using since last fall. The original file on my computer and the one I’ve uploaded each contain 70 items and are the same size. I didn’t remove any other files than the wp-includes folder.

I’m not sure how to identify line 20 of the default-filters file, which the error message refers to, so I’ve copied the code below…
<?php
/**
* Sets up the default filters and actions for most
* of the WordPress hooks.
*
* If you need to remove a default hook, this file will
* give you the priority for which to use to remove the
* hook.
*
* Not all of the default hooks are found in default-filters.php
*
* @package WordPress
*/

// Strip, trim, kses, special chars for string saves
$filters = array(‘pre_term_name’, ‘pre_comment_author_name’, ‘pre_link_name’, ‘pre_link_target’,
‘pre_link_rel’, ‘pre_user_display_name’, ‘pre_user_first_name’, ‘pre_user_last_name’,
‘pre_user_nickname’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘strip_tags’);
add_filter($filter, ‘trim’);
add_filter($filter, ‘wp_filter_kses’);
add_filter($filter, ‘wp_specialchars’, 30);
}

// Kses only for textarea saves
$filters = array(‘pre_term_description’, ‘pre_link_description’, ‘pre_link_notes’, ‘pre_user_description’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘wp_filter_kses’);
}

// Email
$filters = array(‘pre_comment_author_email’, ‘pre_user_email’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘trim’);
add_filter($filter, ‘sanitize_email’);
add_filter($filter, ‘wp_filter_kses’);
}

// Save URL
$filters = array(‘pre_comment_author_url’, ‘pre_user_url’, ‘pre_link_url’, ‘pre_link_image’,
‘pre_link_rss’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘strip_tags’);
add_filter($filter, ‘trim’);
add_filter($filter, ‘sanitize_url’);
add_filter($filter, ‘wp_filter_kses’);
}

// Display URL
$filters = array(‘user_url’, ‘link_url’, ‘link_image’, ‘link_rss’, ‘comment_url’);
foreach ( $filters as $filter ) {
add_filter($filter,’strip_tags’);
add_filter($filter, ‘trim’);
add_filter($filter, ‘clean_url’);
add_filter($filter, ‘wp_filter_kses’);
}

// Slugs
$filters = array(‘pre_term_slug’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘sanitize_title’);
}

// Keys
$filters = array(‘pre_post_type’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘sanitize_user’);
}

// Places to balance tags on input
$filters = array(‘content_save_pre’, ‘excerpt_save_pre’, ‘comment_save_pre’, ‘pre_comment_content’);
foreach ( $filters as $filter ) {
add_filter( $filter, ‘balanceTags’, 50);
}

// Format strings for display.
$filters = array(‘comment_author’, ‘term_name’, ‘link_name’, ‘link_description’,
‘link_notes’, ‘bloginfo’, ‘wp_title’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘wptexturize’);
add_filter($filter, ‘convert_chars’);
add_filter($filter, ‘wp_specialchars’);
}

// Format text area for display.
$filters = array(‘term_description’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘wptexturize’);
add_filter($filter, ‘convert_chars’);
add_filter($filter, ‘wpautop’);
}

// Format for RSS
$filters = array(‘term_name_rss’);
foreach ( $filters as $filter ) {
add_filter($filter, ‘convert_chars’);
}

// Display filters
add_filter(‘the_title’, ‘wptexturize’);
add_filter(‘the_title’, ‘convert_chars’);
add_filter(‘the_title’, ‘trim’);

add_filter(‘the_content’, ‘wptexturize’);
add_filter(‘the_content’, ‘convert_smilies’);
add_filter(‘the_content’, ‘convert_chars’);
add_filter(‘the_content’, ‘wpautop’);
add_filter(‘the_content’, ‘prepend_attachment’);

add_filter(‘the_excerpt’, ‘wptexturize’);
add_filter(‘the_excerpt’, ‘convert_smilies’);
add_filter(‘the_excerpt’, ‘convert_chars’);
add_filter(‘the_excerpt’, ‘wpautop’);
add_filter(‘get_the_excerpt’, ‘wp_trim_excerpt’);

add_filter(‘comment_text’, ‘wptexturize’);
add_filter(‘comment_text’, ‘convert_chars’);
add_filter(‘comment_text’, ‘make_clickable’, 9);
add_filter(‘comment_text’, ‘force_balance_tags’, 25);
add_filter(‘comment_text’, ‘convert_smilies’, 20);
add_filter(‘comment_text’, ‘wpautop’, 30);

add_filter(‘comment_excerpt’, ‘convert_chars’);

add_filter(‘list_cats’, ‘wptexturize’);
add_filter(‘single_post_title’, ‘wptexturize’);

add_filter(‘wp_sprintf’, ‘wp_sprintf_l’, 10, 2);

// RSS filters
add_filter(‘the_title_rss’, ‘strip_tags’);
add_filter(‘the_title_rss’, ‘ent2ncr’, 8);
add_filter(‘the_title_rss’, ‘wp_specialchars’);
add_filter(‘the_content_rss’, ‘ent2ncr’, 8);
add_filter(‘the_excerpt_rss’, ‘convert_chars’);
add_filter(‘the_excerpt_rss’, ‘ent2ncr’, 8);
add_filter(‘comment_author_rss’, ‘ent2ncr’, 8);
add_filter(‘comment_text_rss’, ‘ent2ncr’, 8);
add_filter(‘comment_text_rss’, ‘wp_specialchars’);
add_filter(‘bloginfo_rss’, ‘ent2ncr’, 8);
add_filter(‘the_author’, ‘ent2ncr’, 8);

// Misc filters
add_filter(‘option_ping_sites’, ‘privacy_ping_filter’);
add_filter(‘option_blog_charset’, ‘wp_specialchars’);
add_filter(‘option_home’, ‘_config_wp_home’);
add_filter(‘option_siteurl’, ‘_config_wp_siteurl’);
add_filter(‘tiny_mce_before_init’, ‘_mce_set_direction’);
add_filter(‘pre_kses’, ‘wp_pre_kses_less_than’);
add_filter(‘sanitize_title’, ‘sanitize_title_with_dashes’);
add_action(‘check_comment_flood’, ‘check_comment_flood_db’, 10, 3);
add_filter(‘comment_flood_filter’, ‘wp_throttle_comment_flood’, 10, 3);
add_filter(‘pre_comment_content’, ‘wp_rel_nofollow’, 15);
add_filter(‘comment_email’, ‘antispambot’);
add_filter(‘option_tag_base’, ‘_wp_filter_taxonomy_base’);
add_filter(‘option_category_base’, ‘_wp_filter_taxonomy_base’);

//Atom SSL support
add_filter(‘atom_service_url’,’atom_service_url_filter’);

// Actions
add_action(‘wp_head’, ‘rsd_link’);
add_action(‘wp_head’, ‘wlwmanifest_link’);
add_action(‘wp_head’, ‘locale_stylesheet’);
add_action(‘publish_future_post’, ‘check_and_publish_future_post’, 10, 1);
add_action(‘wp_head’, ‘noindex’, 1);
add_action(‘wp_head’, ‘wp_print_scripts’);
add_action(‘wp_head’, ‘wp_generator’);
if(!defined(‘DOING_CRON’))
add_action(‘init’, ‘wp_cron’);
add_action(‘do_feed_rdf’, ‘do_feed_rdf’, 10, 1);
add_action(‘do_feed_rss’, ‘do_feed_rss’, 10, 1);
add_action(‘do_feed_rss2’, ‘do_feed_rss2’, 10, 1);
add_action(‘do_feed_atom’, ‘do_feed_atom’, 10, 1);
add_action(‘do_pings’, ‘do_all_pings’, 10, 1);
add_action(‘do_robots’, ‘do_robots’);
add_action(‘sanitize_comment_cookies’, ‘sanitize_comment_cookies’);
add_action(‘admin_print_scripts’, ‘wp_print_scripts’, 20);
add_action(‘admin_print_styles’, ‘wp_print_styles’, 20);
add_action(‘init’, ‘smilies_init’, 5);
add_action(‘plugins_loaded’, ‘wp_maybe_load_widgets’, 0 );
add_action( ‘shutdown’, ‘wp_ob_end_flush_all’, 1);
add_action(‘pre_post_update’, ‘wp_save_post_revision’ );
add_action(‘publish_post’, ‘_publish_post_hook’, 5, 1);
add_action(‘future_post’, ‘_future_post_hook’, 5, 2);
add_action(‘future_page’, ‘_future_post_hook’, 5, 2);
add_action(‘save_post’, ‘_save_post_hook’, 5, 2);
add_action(‘transition_post_status’, ‘_transition_post_status’, 5, 3);
add_action(‘comment_form’, ‘wp_comment_form_unfiltered_html_nonce’);
// Redirect Old Slugs
add_action(‘template_redirect’, ‘wp_old_slug_redirect’);
add_action(‘edit_post’, ‘wp_check_for_changed_slugs’);
add_action(‘edit_form_advanced’, ‘wp_remember_old_slug’);

?>

I agree with whooami. You are almost certainly missing a file, or maybe you have a corrupt file somewhere. You don’t really need to identify line 20 in this case, since the function not found is add_filter() and that function should be in /wp-includes/plugin.php. That is the file that is missing or broken.

If your files are as old as last fall you might consider upgrading to the latest WP version. Whether you upgrade or continue to use your old files, I’d suggest following the WP Upgrade instructions, which means deleting then re-uploading most of your files not just overwriting. Overwriting is a bit iffie, by the way. It doesn’t always work.

google’s cache of realia.ca :

<meta name="generator" content="WordPress 2.0" /> <!-- leave this for stats please -->

ugh

Thank you apljdi – I thought I would probably have to upgrade, was seeing if there might be another solution first.

Sorry whooami, I don’t know what you mean.

it means that your version of wordpress is old and exploitable. you need to upgrade.

Okay, thank you! I appreciate your responses.

Okay, I followed the detailed instructions for upgrading. On uploading the files, and attempting to go to my admin page, I get this:

https://realia.ca/wordpress/