Hooks and Private in Knowledgebase

[Nyan]

I set the following code in /includes/hooks/.

 

addSidebar.php

<?php

use WHMCS\View\Menu\Item as MenuItem;

 

add_hook('ClientAreaSecondarySidebar', 2, function(MenuItem $secondarySidebar) {

$secondarySidebar->getChild('Support')

->removeChild('Network Status');

});

 

And if I check Private in Knowledgebase, I meet the following error.

Fatal error: Call to a member function removeChild() on null in /WHMCS/includes/hooks/addSidebar.php on line 6

 

Please tell me how to resolve.

[Nyan]

I change addSidebar.php as the following.

But if I check Private in Knowledgebase, I meet the following error.

 

<?php

use WHMCS\View\Menu\Item as MenuItem;

if (App::getCurrentFilename() == 'supporttickets') {

add_hook('ClientAreaSecondarySidebar', 2, function(MenuItem $secondarySidebar)

{

$secondarySidebar->getChild('Support')

->removeChild('Network Status');

});

}

if (App::getCurrentFilename() == 'announcements') {

add_hook('ClientAreaSecondarySidebar', 2, function(MenuItem $secondarySidebar)

{

$secondarySidebar->getChild('Support')

->removeChild('Network Status');

});

}

if (App::getCurrentFilename() == 'knowledgebase') {

add_hook('ClientAreaSecondarySidebar', 2, function(MenuItem $secondarySidebar)

{

$secondarySidebar->getChild('Support')

->removeChild('Network Status');

});

}

[sentq]

change addSidebar.php content to:

 

<?php
use WHMCS\View\Menu\Item as MenuItem;

add_hook('ClientAreaSecondarySidebar', 2, function(MenuItem $secondarySidebar){
   if (!is_null($secondarySidebar->getChild('Support'))){
       if (!is_null($secondarySidebar->getChild('Support')->getChild('Network Status'))){
           $secondarySidebar->getChild('Support')->removeChild('Network Status');
       }
   }
});

[Nyan]

Thank you sentq.

I can resolve.