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count(): Argument #1 ($value) must be of type Countable|array, null given

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Call Stack

# Function Location
1 () JROOT/components/com_weblinks/models/categories.php:90
2 WeblinksModelCategories->getItems() JROOT/libraries/src/MVC/View/AbstractView.php:159
3 Joomla\CMS\MVC\View\AbstractView->get() JROOT/components/com_weblinks/views/categories/view.html.php:49
4 WeblinksViewCategories->display() JROOT/libraries/src/MVC/Controller/BaseController.php:697
5 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_weblinks/controller.php:63
6 WeblinksController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:730
7 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_weblinks/weblinks.php:15
8 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71
9 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73
10 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
11 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:218
12 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:261
13 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:306
14 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58
15 require_once() JROOT/index.php:32