The "Read More" buttons have disappeared

Hi there,

Take a look at this:
https://docs.generatepress.com/article/excerpt-issues/#read-more-label-or-button-not-showing

Okay. I understand that I should put this code:

-----------------------------------------------------------------

add_filter( 'wp_trim_excerpt', 'tu_excerpt_metabox_more' );
function tu_excerpt_metabox_more( $excerpt ) {
$output = $excerpt;

if ( has_excerpt() ) {
$output = sprintf( '%1$s <p class="read-more-button-container">%3$s</p>',
$excerpt,
get_permalink(),
__( 'Read more', 'generatepress' )
);
}

return $output;
}

------------------------------------------------------------

But where should I put it? Under "Customization > Additional CSS?" or in "Elements > Hook"?

Ok, ok, I have put the code in the Code Snippets plugin and it works. Thank you

Glad to hear :)