Redmine

Hi!
I am trying to test OnlyOffice integration with Redmine.
Ubuntu 22.04, redmine 5.1.2, ruby 3.1.2, rails 6.1.7.7, onlyoffice_redmine 3.1.0

Installed onlyoffice server docs by this commands:

wget http://download.onlyoffice.com/docs/docs-install.sh
bash docs-install.sh -dp 8080

I don't know why, but after installation, the port remained 80

I try to use demo onlyoffice server.
when I tried to save the settings and got an 'Internal error' at the page top.

production log is

when I try to use a local server, the problem is the same

Have anyone the same error ? how to fix the error?

Thanks