Customizing Dashboard Menu

Hi

We refer to this page and customize the menu with the following code.
https://wclovers.com/documentation/developers-guide/

After implementing the menu manager, 404 not found frequently occurred.
On the setting page of the menu manager, the customize menu is increasing.

(Excerpt)
$this->endpoints = [
“affiliates” => [
‘label’ => __(‘Affiliates’, ‘dresscloud-ex’),
‘icon’ => ‘users’,
‘url’ => add_query_arg($lang, get_wcfm_page().’affiliates/index’)
]
];
function add_wcfm_endpoints_slug($fields) {
foreach($this->endpoints as $point => $attr) {
$fields[$point] = $point;
}
return $fields;
}
add_filter(‘wcfm_menus’, array( &$this, ‘add_wcfm_dashboard_menus’ ) , 30, 1);

function add_wcfm_dashboard_menus($wcfm_menus) {
foreach($this->endpoints as $point => $attr) {
$wcfm_menus[$point] = $attr;
}
return $wcfm_menus;
}
add_filter(‘wcfm_

Regards,
TK