Also the /internal/{info,health} paths must be publically available

config/packages/security.yaml

@@ -9,7 +9,7 @@ security:
         main:
             provider: in_memory
         monitor:
-            pattern: ^/(info|health)$
+            pattern: ^/(internal/)?(info|health)$
             security: false
             # activate different ways to authenticate
             # https://symfony.com/doc/current/security.html#firewalls-authentication