marcW-15

Problem:
The client wants to add a trailing slash to the hreflang URL output in the by WPML to avoid SEO problems due to redirects.
Solution:
We recommend a workaround that involves editing the WPML plugin files directly. Before proceeding, ensure to back up your site. The file to modify is

wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php

.
Find the

language_url

method and replace the existing code with the following:

function language_url( $code = null ) {
	global $wpml_url_converter;

	if ( is_null( $code ) ) {
		$code = $this->this_lang;
	}

	$abs_home = trailingslashit($wpml_url_converter->get_abs_home());
	$url      = $this->convert_url( $abs_home, $code );

	return $url;
}

Our developers are aware of this issue and are working on a fix that may be included in a future update, possibly WPML 4.6.9, but there is no guarantee. Implementing the above code change will not affect your site's functionality, but be aware that updating the plugin to a newer version will overwrite this change unless the fix is included in that update. Currently, there is no hook/filter available for this adjustment in your theme's functions.php.

If this solution doesn't look relevant to your situation, please open a new support ticket with us.