[Resolved] Problem with WP 5.4

[Hans]

I installed WP 5.4 a few minute ago.

My site does not work since that time. I got the following warnings:

Start Frontpage
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'disable_embeds_rewrites'
 not found or invalid function name in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php on line 287

Any Userpage
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'disable_embeds_rewrites'
 not found or invalid function name in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php on line 287 
Warning: Cannot modify header information - headers already sent by (output started at /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php:287)
 in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/pluggable.php on line 1281 
Warning: Cannot modify header information - headers already sent by (output started at /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php:287)
 in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/pluggable.php on line 1284
 
 Start Dashbord WordPress
 ng: call_user_func_array() expects parameter 1 to be a valid callback, function 'disable_embeds_rewrites'
 not found or invalid function name in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php on line 287
Warning: Cannot modify header information - headers already sent by (output started at /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-includes/class-wp-hook.php:287)
 in /mnt/web417/a2/76/52551976/htdocs/waehlt/wp-admin/admin-header.php on line 9

I do not find the function waehlt/wp-includes/class-wp-hook.php in WP 5.4. Can you find out which part of my site is invoving this routine?

I need urgent help as the site must be online in next future and still some work is to be done.Otherwise I have to roll back very soon.

[Hans]

This snippets caused the error:

/**
 * Disable embeds on init.
 *
 * - Removes the needed query vars.
 * - Disables oEmbed discovery.
 * - Completely removes the related JavaScript.
 *
 * @since 1.0.0
 */
function evolution_disable_embeds_init() {
    /* @var WP $wp */
    global $wp;

    // Remove the embed query var.
    $wp->public_query_vars = array_diff( $wp->public_query_vars, array(
        'embed',
    ) );

    // Remove the REST API endpoint.
    remove_action( 'rest_api_init', 'wp_oembed_register_route' );

    // Turn off oEmbed auto discovery.
    add_filter( 'embed_oembed_discover', '__return_false' );

    // Don't filter oEmbed results.
    remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );

    // Remove oEmbed discovery links.
    remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );

    // Remove oEmbed-specific JavaScript from the front-end and back-end.
    remove_action( 'wp_head', 'wp_oembed_add_host_js' );
    add_filter( 'tiny_mce_plugins', 'evolution_disable_embeds_tiny_mce_plugin' );

    // Remove all embeds rewrite rules.
    add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

    // Remove filter of the oEmbed result before any HTTP requests are made.
    remove_filter( 'pre_oembed_result', 'wp_filter_pre_oembed_result', 10 );
}

add_action( 'init', 'evolution_disable_embeds_init', 9999 );

/**
 * Removes the 'wpembed' TinyMCE plugin.
 *
 * @since 1.0.0
 *
 * @param array $plugins List of TinyMCE plugins.
 * @return array The modified list.
 */
function evolution_disable_embeds_tiny_mce_plugin( $plugins ) {
    return array_diff( $plugins, array( 'wpembed' ) );
}

/**
 * Remove all rewrite rules related to embeds.
 *
 * @since 1.0.0
 *
 * @param array $rules WordPress rewrite rules.
 * @return array Rewrite rules without embeds rules.
 */
function evolution_disable_embeds_rewrites( $rules ) {
    foreach ( $rules as $rule => $rewrite ) {
        if ( false !== strpos( $rewrite, 'embed=true' ) ) {
            unset( $rules[ $rule ] );
        }
    }

    return $rules;
}

/**
 * Remove embeds rewrite rules on plugin activation.
 *
 * @since 1.0.0
 */
function evolution_disable_embeds_remove_rewrite_rules() {
    add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
    flush_rewrite_rules( false );
}

register_activation_hook( __FILE__, 'evolution_disable_embeds_remove_rewrite_rules' );

/**
 * Flush rewrite rules on plugin deactivation.
 *
 * @since 1.0.0
 */
function evolution_disable_embeds_flush_rewrite_rules() {
    remove_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
    flush_rewrite_rules( false );
}

register_deactivation_hook( __FILE__, 'evolution_disable_embeds_flush_rewrite_rules' );

[David]

Hi there,

glad you found what the issue was.

[Author]

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