diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
index bc8dfff..d628395 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
@@ -1230,7 +1230,7 @@ function render_text($alter) {
     if ($alter['phase'] == VIEWS_HANDLER_RENDER_TEXT_PHASE_EMPTY && $no_rewrite_for_empty) {
       // If we got here then $alter contains the value of "No results text"
       // and so there is nothing left to do.
-      return $value;
+      return (string) $value;
     }
 
     if (!empty($alter['strip_tags'])) {