Wrong canonical tags for pagination pages for WordPress websites with Yoast

Issue description

A Client has a website on WordPress, they use Yoast SEO plugin.
By default Yoast generated wrong canonical tags for Blog pagination pages :
for example:
a page https://website.com/blog/page/2/ had a canonical tag https://website.com/blog/page/2
and they had a redirection from https://website.com/blog/page/2 to https://website.com/blog/page/2/
So – there is quite an issue here!

Solution

As a solution – necessary to add a trailing slash at the end of canonical tags for pagination pages. A second variant – is to remove the canonical tags for pagination pages at all.
(The difference between these two – is canonical tags can handle URLs with attributes like ?gclid= )

Code

As a solution – necessary to insert a piece of code in functions.php:
Appearance – Theme File Editor – functions.php

Variant 1: To add trailing slash for paginated pages

<?php
/**
 * Forces a trailing slash on Yoast SEO canonical URLs for paginated pages.
 *
 * @param string $canonical The canonical URL.
 * @return string The modified canonical URL.
 */
function force_trailing_slash_on_yoast_pagination_canonical( $canonical ) {
    // Check if it's a paginated page (e.g., /page/2/)
    if ( is_paged() ) {
        // Use trailingslashit() to ensure a trailing slash is present
        return trailingslashit( $canonical );
    }
    return $canonical;
}
add_filter( 'wpseo_canonical', 'force_trailing_slash_on_yoast_pagination_canonical', 10 );
?>

Variant 2: To remove canonicals from paginated pages

<?php
/**
 * Remove Yoast SEO's canonical tag from paginated  pages.
 *
 * @param string $canonical The canonical URL.
 * @return string|false The modified canonical URL or false to remove it.
 */
function remove_yoast_canonical_from_pagination( $canonical ) {
    if ( is_paged() ) {
        return false; // Return false to remove the canonical tag
    }
    return $canonical;
}
add_filter( 'wpseo_canonical', 'remove_yoast_canonical_from_pagination', 10 );
?>