Problem/Motivation
When creating a data export display using the Views Data Export module for node content or media content, the site encounters the following error:
The website encountered an unexpected error. Try again later.
AssertionError: Cannot load the "file" entity with NULL ID. in assert() (line 261 of core/lib/Drupal/Core/Entity/EntityStorageBase.php).
Drupal\Core\Entity\EntityStorageBase->load(NULL) (Line: 503)
Drupal\Core\Entity\EntityBase::load(NULL) (Line: 317)
Drupal\xls_views_data_export\Plugin\views\display\XlsDataExport->buildOptionsForm(Array, Object) (Line: 74)
Drupal\views_ui\Form\Ajax\Display->buildForm(Array, Object)
call_user_func_array(Array, Array) (Line: 536)
Drupal\Core\Form\FormBuilder->retrieveForm('views_ui_edit_display_form', Object) (Line: 284)
Drupal\Core\Form\FormBuilder->buildForm('Drupal\views_ui\Form\Ajax\Display', Object) (Line: 215)
Drupal\views_ui\Form\Ajax\ViewsFormBase->Drupal\views_ui\Form\Ajax\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 217)
Drupal\views_ui\Form\Ajax\ViewsFormBase->ajaxFormWrapper('Drupal\views_ui\Form\Ajax\Display', Object) (Line: 127)
Drupal\views_ui\Form\Ajax\ViewsFormBase->getForm(Object, 'data_export_1', 'ajax') (Line: 46)
Drupal\views_ui\Form\Ajax\Display->getForm(Object, 'data_export_1', 'ajax', 'path')
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 263)
Drupal\shield\ShieldMiddleware->bypass(Object, 1, 1) (Line: 130)
Drupal\shield\ShieldMiddleware->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 49)
Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
This error prevents the proper configuration of the display and impacts the usability of the module for exporting data.
Steps to reproduce
1. Install and enable the Views Data Export module.
2. Create a new view or edit an existing view of type media/content.
3. Add a "Data Export" display to the view.
4. Attempt to configure the Path for data export
5. Observe the error message.
Proposed resolution
1. Add validation to check for NULL values before attempting to load entities.
Remaining tasks
User interface changes
No significant UI changes are expected.
API changes
No API changes are expected.
Data model changes
No changes to the data model are expected.