Cylc hub: issues with Jupyterhub 4.1

Cylc Cylc Announce
1

We have identified an issue with cylc hub when using Jupyterhub 4.1 (current latest release is 4.1.5) where the Cylc GUI may not load correctly. We are working to establish the cause, but for the time being, the only workaround is to downgrade to Jupyterhub 4.0.2.

# In pip-managed environments:
pip install 'jupyterhub==4.0.2'

# In conda-managed environments:
conda install 'jupyterhub=4.0.2'
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This has been addressed in cylc-uiserver 1.5.0 released earlier this week (changelog) as part of Cylc 8.3.0. The latest version of cylc-uiserver is compatible with both JupyterHub v4 and v5.

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