Installation of nest binding in paperui fails

I try to install the Nest binding via PaperUI (using Firefox browser). Unfortunately I cannot finish successfully. The circle indicating that it is still installing proceeds to rotate for minutes. After browser refresh, I can see that binding is not installed. Any ideas? thanks for your support in advance.

please provide logs

in the logfile there is nothing seen (openhab.log). at least with debug logging level

which logging level is required?

I would suggest to uninstall the binding
and follow the steps in the docs step by step again