src/Render/BigPipe.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Render/BigPipe.php b/src/Render/BigPipe.php
index 9af1b0f..739d444 100644
--- a/src/Render/BigPipe.php
+++ b/src/Render/BigPipe.php
@@ -216,6 +216,8 @@ class BigPipe implements BigPipeInterface {
       assert('isset($no_js_placeholders[$placeholder])');
       $token = Crypt::randomBytesBase64(55);
 
+//      var_dump($_SESSION['messages']);
+      print '[RENDERING BIG PIPE NO-JS PLACEHOLDER "' . Html::escape($placeholder) . '"]';
       // Render the placeholder, but include the cumulative settings assets, so
       // we can calculate the overall settings for the entire page.
       $placeholder_plus_cumulative_settings = [
@@ -258,6 +260,7 @@ class BigPipe implements BigPipeInterface {
       $this->requestStack->pop();
 
       // Send this embedded HTML response.
+      print '[RENDERED OUTPUT FOR NO-JS PLACEHOLDER "' . Html::escape($placeholder) . '"="' . $html_response->getContent() . '"]';
       print $html_response->getContent();
       flush();