General Questions/New to Joomla! 5.x • Error on creating custom field

Hi,

When I try to create a custom field, I get this error, immediately on clicking the button New

Call to a member function hasChildren() on null

I copied the stack, see below.

The site is created from a fresh J.5 install and is in develop stage. There are no custom fields created yet. I did create one category for the custom fields (after I got the error but it did not solve the error). I did import a lot of content from a J.3 site using RO CSVI. There are no custom fields on the source site so there are no references to any custom fields in this content.

Kind regards, Frits


edit: Joomla version 5.1.4

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1 () JROOT/administrator/components/com_fields/src/Model/FieldModel.php:1087
2 Joomla\Component\Fields\Administrator\Model\FieldModel->preprocessForm() JROOT/libraries/src/MVC/Model/FormBehaviorTrait.php:115
3 Joomla\CMS\MVC\Model\FormModel->loadForm() JROOT/administrator/components/com_fields/src/Model/FieldModel.php:551
4 Joomla\Component\Fields\Administrator\Model\FieldModel->getForm() JROOT/libraries/src/MVC/View/AbstractView.php:159
5 Joomla\CMS\MVC\View\AbstractView->get() JROOT/administrator/components/com_fields/src/View/Field/HtmlView.php:67
6 Joomla\Component\Fields\Administrator\View\Field\HtmlView->display() JROOT/libraries/src/MVC/Controller/BaseController.php:697
7 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/administrator/components/com_fields/src/Controller/DisplayController.php:69
8 Joomla\Component\Fields\Administrator\Controller\DisplayController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:730
9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:143
10 Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
11 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/AdministratorApplication.php:150
12 Joomla\CMS\Application\AdministratorApplication->dispatch() JROOT/libraries/src/Application/AdministratorApplication.php:195
13 Joomla\CMS\Application\AdministratorApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:306
14 Joomla\CMS\Application\CMSApplication->execute() JROOT/administrator/includes/app.php:58
15 require_once() JROOT/administrator/index.php:32

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Statistics: Posted by oorzaak — Fri Sep 20, 2024 9:42 am

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