1. Please make sure you only have the latest dependancy packages for your enviroment in your /packages folder.
2. It could be related to this kubernetes bug https://v1-22.docs.kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/
3. Try upgrading past 1.21.x manualy
Please feel free to contact us for any question that is not answered yet.
We are looking forward to get in contact with you!