Issue #3307934: Deprecated function: Automatic conversion of false to array is deprecated

src/Controller/AjaxController.php

@@ -141,7 +141,7 @@ class AjaxController extends ControllerBase {
    * {@inheritdoc}
    */
   public function getResults($entities, $components, $setting = []) {
-    $data = FALSE;
+    $data = [];
     foreach ($entities as $delta => $entity) {
       $table_entity = $this->renderBuild->build($entity);
       $objectData = new \stdClass();
@@ -183,14 +183,14 @@ class AjaxController extends ControllerBase {
       }
       $data[$delta] = $objectData;
     }
-    return $data;
+    return count($data) ? $data : FALSE;
   }
 
   /**
    * {@inheritdoc}
    */
   public function getTable($entities, $components, $setting = []) {
-    $data = FALSE;
+    $data = [];
     foreach ($entities as $delta => $entity) {
       $table_entity = $this->renderBuild->build($entity);
       foreach ($components as $field_name => $field) {
@@ -207,14 +207,14 @@ class AjaxController extends ControllerBase {
         $data[$delta]['operation'] = $this->paragraphsTableLinksAction($entity->id(), $destination);
       }
     }
-    return $data;
+    return count($data) ? $data : FALSE;
   }
 
   /**
    * {@inheritdoc}
    */
   public function getData($entities, $components, $setting = []) {
-    $data = FALSE;
+    $data = [];
     $header = [];
     foreach ($components as $field_name => $field) {
       $header[] = $field['title'];
@@ -262,7 +262,7 @@ class AjaxController extends ControllerBase {
 
     array_unshift($data, $header);
 
-    return $data;
+    return count($data) ? $data : FALSE;
   }
 
   /**