custom post type permalink change done, showing page not found

Hi Support Team,

I have custom post type “agentss” and i have change the permalink of this post type from site_url/agentss/post-name to site_url/agents/agent_id(post_meta_value)/post-name. Below is the code i have used in functions.php

add_action( ‘init’, ‘pubmonth_register_rewrite_tag’);
function pubmonth_register_rewrite_tag() {
add_rewrite_tag( ‘%agent_id%’, ‘([0-9]{5}’);
}

add_filter(‘post_type_link’, ‘pub_term_permalink’, 10, 4);
function pub_term_permalink($permalink, $post, $leavename, $sample)
{
if ( false !== strpos( $permalink, ‘agents/%agent_id%’ ) ) {
//get the month of the publication
$agent_id = get_post_meta($post->ID, ‘agent_id’, true);
$rewritecode = array(
‘%agent_id%’,
$leavename? ” : ‘%postname%’,
);
$rewritereplace = array(
$agent_id,
$post->post_name
);
$permalink = str_replace($rewritecode, $rewritereplace, $permalink);
}
return $permalink;
}

add_action( ‘init’, ‘pub_add_rewrite_rules’ );
function pub_add_rewrite_rules() {
add_rewrite_rule( ‘^([^/]*)/([0-9]{4})/([^/]+)?’, ‘agentss/index.php?pagename=$matches[2]’, ‘top’ );
}
then i saved the permalink. after this post link is showing correctly in the admin but wghen i open in front end it is throwing page-not-found/?avia_forced_reroute=1