When configuring Celery executor with TLS, setting celery ssl active to True and using an amqps:// or…

When configuring Celery executor with TLS, setting celery ssl active to True and using an amqps:// or…: a task in LegoFlow-SWE (Harbor dataset). If empty paths are passed, py‑amqp crashes with a cryptic Errno 2 error when trying to load non‑existent certificate files.