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Error: Call to undefined function Drupal\views_xml_backend\Plugin\views\query\file_prepare_directory() in Drupal\views_xml_backend\Plugin\views\query\Xml->fetchRemoteFile() (line 627 of modules/views_xml_backend/src/Plugin/views/query/Xml.php).
Drupal\views_xml_backend\Plugin\views\query\Xml->fetchRemoteFile('http://dev201.psau.edu.sa/ar/courses?format=xml') (Line: 590)
Drupal\views_xml_backend\Plugin\views\query\Xml->fetchFileContents('http://dev201.psau.edu.sa/ar/courses?format=xml') (Line: 422)
Drupal\views_xml_backend\Plugin\views\query\Xml->doExecute(Object) (Line: 393)
Drupal\views_xml_backend\Plugin\views\query\Xml->execute(Object) (Line: 1426)
Drupal\views\ViewExecutable->execute(NULL) (Line: 1454)
Drupal\views\ViewExecutable->render() (Line: 199)
Drupal\views\Plugin\views\display\Page->execute() (Line: 1630)
Drupal\views\ViewExecutable->executeDisplay('courses', Array) (Line: 81)
Drupal\views\Element\View::preRenderViewElement(Array)
call_user_func_array(Array, Array) (Line: 101)
Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 772)
Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 363)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 201)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 241)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 242)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 132)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 163)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 80)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 38)
Drupal\debug_bar\DebugBarMiddleware->handle(Object, 1, 1) (Line: 38)
Drupal\psau_old_url\OldUrlMiddleware->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->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: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)