Issue #3508720: Error on Operation List

src/cbo_scripts/TestErrorOnGatheringItems.php

@@ -46,17 +46,14 @@ class TestErrorOnGatheringItems extends BatchOperations implements BatchScriptIn
    * {@inheritdoc}
    */
   public function gatherItemsToProcess(): array {
-    // Do whatever you need to here to put together the list of items
-    // to be processed. Can be a keyed array like
-    // [key1 => item1, key2 => item2 ...]
-    // or a flat array [item1, item2, item3 ...].
-    // 'item' can be something simple like a node id for processOne() to load,
-    // or could be a loaded entity to act on.
+    // We are intentionally making an error here by lokking for something that does not exist.
+    // It should cause an error on the BatchOperation list UI page and on the trying to run it.
+    // If you see an error that is good, becuase is means the error was caught and did not WSOD.
     $query = $this->entityTypeManager->getStorage('node')->getQuery();
     $items = $query
       ->condition('type', 'yorick_parts')
       ->accessCheck(FALSE)
-      ->condition('field_parts', 'skull', '=')
+      ->condition('non_existent_field_to_cause_intentional_error-PLEASE-IGNORE', 'skull', '=')
       ->execute();
     return $items;
   }