Try this php below:
add_action( 'after_setup_theme','tu_remove_read_more' );
function tu_remove_read_more() {
remove_filter( 'excerpt_more', 'generate_blog_excerpt_more', 99 );
}
add_filter( 'excerpt_more', 'tu_blog_excerpt_more', 99 );
function tu_blog_excerpt_more( $more ) {
if ( ! function_exists( 'generate_blog_get_defaults' ) )
return;
$generate_settings = wp_parse_args(
get_option( 'generate_blog_settings', array() ),
generate_blog_get_defaults()
);
// If empty, return
if ( '' == $generate_settings['read_more'] )
return;
return '... <a title="' . esc_attr( get_the_title() ) . '" class="read-more" href="'. esc_url( get_permalink( get_the_ID() ) ) . '">' . $generate_settings['read_more'] . '</a>';
}
Adding php: https://docs.generatepress.com/article/adding-php/
Let me know.