Issue #3134540 by voleger, alex_optim, pifagor: Add exception handling in the...

Issue #3134540 by voleger, alex_optim, pifagor: Add exception handling in the xmlsitemap_sitemap_get_max_filesize function

xmlsitemap.module

@@ -21,6 +21,7 @@ use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\ContentEntityTypeInterface;
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\Query\QueryInterface;
+use Drupal\Core\File\Exception\FileException;
 use Drupal\Core\File\FileSystemInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Language\LanguageInterface;
@@ -418,13 +419,23 @@ function xmlsitemap_sitemap_get_file(XmlSitemapInterface $sitemap, $chunk = 'ind
  *
  * @param \Drupal\xmlsitemap\XmlSitemapInterface $sitemap
  *   The XML sitemap object.
+ *
+ * @return int
+ *   Maximum file size in the directory.
  */
 function xmlsitemap_sitemap_get_max_filesize(XmlSitemapInterface $sitemap) {
   $dir = xmlsitemap_get_directory($sitemap);
   $sitemap->setMaxFileSize(0);
   /** @var \Drupal\Core\File\FileSystemInterface $file_system */
   $file_system = \Drupal::service('file_system');
-  foreach ($file_system->scanDirectory($dir, '/\.xml$/') as $file) {
+  try {
+    $files = $file_system->scanDirectory($dir, '/\.xml$/');
+  }
+  catch (FileException $e) {
+    // Ignore and return empty array for BC.
+    $files = [];
+  }
+  foreach ($files as $file) {
     $sitemap->setMaxFileSize(max($sitemap->getMaxFileSize(), filesize($file->uri)));
   }
   return $sitemap->getMaxFileSize();