Docker Rancher Upgrade to 2.11.1 (from v2.6.8 -> 2.10.3 -> 2.11.1)

Received the following errors on trying to upgrade to docker image 2.11.1

2025/05/09 03:23:43 [ERROR] RDPClient: error reading connect secret: secrets "api-extension" not found, will attempt to create new one...
2025/05/09 03:23:43 [ERROR] RDPClient: error creating connect secret: Internal error occurred: failed calling webhook "rancher.cattle.io.secrets": failed to call webhook: Post "https://rancher-webhook.cattle-system.svc:443/v1/webhook/mutation/secrets?timeout=15s": no endpoints available for service "rancher-webhook"
2025/05/09 03:23:43 [FATAL] Internal error occurred: failed calling webhook "rancher.cattle.io.secrets": failed to call webhook: Post "https://rancher-webhook.cattle-system.svc:443/v1/webhook/mutation/secrets?timeout=15s": no endpoints available for service "rancher-webhook"

Followed this guide: https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/other-installation-methods/rancher-on-a-single-node-with-docker/upgrade-docker-installed-rancher

Tested removal of the rancher webhook before attempting the upgrade to 2.11.1, and it worked on the test docker container. However, I am unsure if this will cause any issues that I am currently unaware of.

Is there any other way of resolving this error?

Start with the linked single-node Docker upgrade guide and the reported failure at the rancher-webhook service endpoint during the 2.11.1 upgrade. Compare the test-container result after removing rancher-webhook with the failing upgrade path, and establish a documented, upgrade-safe resolution without leaving webhook behavior ambiguous.