Translate “read more” button

Hi,

I’ve been using Polylang to translate our website in 5 languages and it’s working just fine for us, but there is one thing I just can’t figure out how to do.
I am using the Latest-posts-block for a lot of things, from news to product lists display, and I want to show an excerpt of the posts concerned. At the end I have a “Read more” button, that I don’t know how to translate.

Here is the code I am using in the latest-posts.php file, found in wp-includes/blocks:

$post_url = get_permalink( $post_id );
		$text = get_post( $post_id );
		$text = $text->post_content;
		$text = wp_trim_words( $text, 20, '... <a class="wp-block-latest-posts-read-more" href="'.$post_url.'">Read more</a>' );
		$excerpt = $text;
				
		$list_items_markup .= sprintf(
			'<li class="wp-block-latest-posts-homepage">
			<a class="wp-block-latest-posts-thumbnail" href="%2$s">%1$s</a><div class="wp-block-latest-posts-extract"><h4>%3$s</h4><p>%4$s</p>',
			get_the_post_thumbnail( $post_id ),
			esc_url( get_permalink( $post_id ) ),
			esc_html( $title ), 
			$excerpt
		);

Right know, Read more is just a plain text, but I’ve tried using things like the following without any success:

$text = wp_trim_words( $text, 20, '... <a class="wp-block-latest-posts-read-more" href="'.$post_url.'">'.pll_e('Read more').'</a>' );
and registering the string in my functions.php file.

Could you help me translating this? It’s not super important but it’ll look better if I could just translate it instead of letting the string in english for all languages.

Thanks
Florian

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