I have installed the RC on raspberryPi it works perfectly on standalone screen but I cannot use it through jupyterhub. it seems not to be a big problem (see workaround a bit further) I report here in case it may help (moon is my jupyter guest user ) .
[I 2020-11-25 21:48:25.061 ServerApp] 302 GET /user/moon/ (127.0.0.1) 4.12ms
[W 2020-11-25 21:48:25.064 JupyterHub _version:41] Single-user server has no version header, which means it is likely < 0.8. Expected 1.2.1
The error message on the web browser is a 404
404 : Not Found
You are requesting a page that does not exist!
## here is the padge adress
Workaround : start jupyterhub with notebook and change the web address to :
you get the jlab3 interface .
Thanks for the work