3 level menu?

Hi,

To make the lay-out of my website somewhat nicer, I chose teh Lighthouse theme. I made a child-theme of it so I can I can make adjustments without losing them.
Everything looks okay, except the menu. I had a menu with 3 levels but I can see only 2 of them. I found out on the internet that the Lighthouse theme was built this way.
I saw that wp-bootstrap-navwalker has been used with this theme. In the file inc/extras.php I see the following:

wp_nav_menu(array(
‘theme_location’ => ‘primary’,
‘depth’ => 2,
‘container’ => ‘div’,
‘container_class’ => ‘collapse navbar-collapse navbar-ex1-collapse’,
‘menu_class’ => ‘nav navbar-nav’,
‘fallback_cb’ => ‘wp_bootstrap_navwalker::fallback’,
‘walker’ => new wp_bootstrap_navwalker()
));

I already changed the depth to 3, but that doesn’t make any difference. I searched th internet for a solution but can’t find one working.

Does anyone know which file(s) have to be adjusted to make this working?

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