diff -ru src/Symfony/Component/BrowserKit/AbstractBrowser.php src/Symfony/Component/BrowserKit/AbstractBrowser.php
--- src/Symfony/Component/BrowserKit/AbstractBrowser.php	2023-05-24 11:09:15.241968817 +0000
+++ src/Symfony/Component/BrowserKit/AbstractBrowser.php	2023-05-24 11:09:18.918184420 +0000
@@ -454,7 +454,7 @@
             foreach ($deprecations ? unserialize($deprecations) : [] as $deprecation) {
                 if ($deprecation[0]) {
                     // unsilenced on purpose
-                    trigger_error($deprecation[1], \E_USER_DEPRECATED);
+                    @trigger_error($deprecation[1], \E_USER_DEPRECATED);
                 } else {
                     @trigger_error($deprecation[1], \E_USER_DEPRECATED);
                 }