DURABLE_OBJECT_NOT_CONTAINER_ENABLED

I clicked Deploy on Cloudflare on the page of this repository (linking to : https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/moltworker)

It ended with:

`
14:37:07.485 | 1c3f3ec8cf9f: Pushed
-- | --
14:37:08.473 | dcc5716f: digest: sha256:c7e764042a2b5cb8f9c893f68a0f452ae0dc1ba42debcf319c463435d2c0bf70 size: 4428
14:37:08.809 | ╭ Deploy a container application deploy changes to your application
14:37:08.809 | │
14:37:09.495 | │ Container application changes
14:37:09.495 | │
14:37:09.496 | ├ NEW openclaw-sandbox-sandbox
14:37:09.496 | │
14:37:09.496 | │ {
14:37:09.496 | │ "containers": [
14:37:09.496 | │ {
14:37:09.497 | │ "name": "openclaw-sandbox-sandbox",
14:37:09.497 | │ "scheduling_policy": "default",
14:37:09.497 | │ "configuration": {
14:37:09.497 | │ "image": "registry.cloudflare.com/*[hidden for security]*/openclaw-sandbox-sandbox:dcc5716f",
14:37:09.497 | │ "instance_type": "standard-4",
14:37:09.497 | │ "observability": {
14:37:09.497 | │ "logs": {
14:37:09.497 | │ "enabled": true
14:37:09.497 | │ }
14:37:09.497 | │ }
14:37:09.497 | │ },
14:37:09.497 | │ "instances": 0,
14:37:09.497 | │ "max_instances": 1,
14:37:09.497 | │ "constraints": {
14:37:09.497 | │ "tiers": [
14:37:09.497 | │ 1,
14:37:09.498 | │ 2
14:37:09.498 | │ ]
14:37:09.498 | │ },
14:37:09.498 | │ "durable_objects": {
14:37:09.498 | │ "namespace_id": "*[hidden for security]*"
14:37:09.498 | │ },
14:37:09.498 | │ "rollout_active_grace_period": 0
14:37:09.498 | │ }
14:37:09.498 | │ ]
14:37:09.498 | │ }
14:37:09.498 | │
14:37:10.229 |  
14:37:10.325 | ✘ [ERROR] Error creating application due to a misconfiguration:
14:37:10.325 |  
14:37:10.325 | DURABLE_OBJECT_NOT_CONTAINER_ENABLED
14:37:10.325 |  
14:37:10.325 |  
14:37:10.384 |  
14:37:10.384 | Cloudflare collects anonymous telemetry about your usage of Wrangler. Learn more at https://github.com/cloudflare/workers-sdk/tree/main/packages/wrangler/telemetry.md
14:37:10.415 | 🪵 Logs were written to "/opt/buildhome/.config/.wrangler/logs/wrangler-2026-01-30_19-32-59_174.log"
14:37:10.476 | Failed: error occurred while running deploy command

`