Button Launch Dashboard in Jupyterlab not available

[lifetooeasy]

Describe the issue:

When I start a Dask cluster with.g:

Minimal Complete Verifiable Example:

from dask.distributed import Client
client = Client()
client

The button Launch Dashboard in Jupyterlab is not available.

It works in another conda environment.

jupyterlab=3.6.2
dask-labextension=6.1.0
dask-core=2023.7.1

[lifetooeasy]

Could be related to this comment dask/distributed#7218 (comment)