Fix type error in setup script when adding new server

Fixes #14312

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>

1 files changed, 2 insertions, 0 deletions

diff --git a/setup/lib/FormProcessing.php b/setup/lib/FormProcessing.php
index 35aaf4c4c6..195ce5f503 100644
--- a/setup/lib/FormProcessing.php
+++ b/setup/lib/FormProcessing.php
@@ -32,6 +32,7 @@ class FormProcessing
             // revert erroneous fields to their default values
             $form_display->fixErrors();
             $response = Response::getInstance();
+            $response->disable();
             $response->generateHeader303('index.php' . Url::getCommonRaw());
         }
 
@@ -44,6 +45,7 @@ class FormProcessing
         // check for form errors
         if (!$form_display->hasErrors()) {
             $response = Response::getInstance();
+            $response->disable();
             $response->generateHeader303('index.php' . Url::getCommonRaw());
             return;
         }