Incompatibility with WP Mega Menu Pro

Well … I found this old post and a code that I have put as Must Use Plugin into /wp-content/. But I still have the same problem.

https://www.ads-software.com/support/topic/multilingual-press-max-mega-menu-php-fatal-error/

How could I modify this code to adapt it to solve my issue?
Thank you!

add_action( 'inpsyde_mlp_init', function ( Inpsyde_Property_List_Interface $data ) {

	if ( is_admin() ) {
		return;
	}

	remove_action( 'inpsyde_mlp_loaded', 'mlp_nav_menu_init' );

	add_action( 'inpsyde_mlp_loaded', function () use ( $data ) {

		$language_api = $data->get( 'language_api' );

		( new Mlp_Nav_Menu_Controller(
			$language_api,
			$data->get( 'assets' )
		) )->initialize();

		add_action( 'template_redirect', function () use ( $language_api ) {

			$frontend = new Mlp_Nav_Menu_Frontend( '_blog_id', $language_api );
			add_filter( 'wp_nav_menu_objects', [ $frontend, 'filter_items' ], 9 ); // <-- HERE is your change. ;)
		} );
	} );
} );

Hi Sebastian,

As a quick fix try this, in src/inc/nav-menu/Mlp_Nav_Menu_Frontend.php line 74 replace this:

public function maybe_delete_obsolete_item( WP_Post $item ) {
  $site_id = $this->get_site_id( $item );
  ...

for this:

public function maybe_delete_obsolete_item( $item ) {
  return false;
  $site_id = $this->get_site_id( $item );
  ...

Try it and let us know.

Thanks,
Emili

Thanks for your answer!

Will this workaround continue to work when updating the plugin?

Is there any way to solve the problem by using Hooks or Filters to not lose the fix with future plugin updates?

Thanks!