Workbench is NOT compatible with "Kubeflow Notebook" (Alauda AI <= 1.3). You need to create new "workbench" instances, the "Kubeflow Notebook" will be moved to "Advanced - Kubeflow" in the left navigation bar.
We recommend moving to Workbench because "Kubeflow Notebook" will be deprecated in upcoming upstream Kubeflow releases.
You can keep the PVCs used by "Kubeflow Notebook" instances in Alauda AI 1.3. Delete the Notebook instance and mount the PVC into new Workbench instances so data in your Notebook instance remains available. (NOTE Data in the container will be lost, just as when you've used pip install to install packages to the system instead of a virtual environment.)