Hello,

I have an ubuntu machine and try to install openproject for local use and test.

I have follow the tutorial fir ubuntu install and i have no error.

When i try to access to127.0.0.1:80 the apache défaut web page appear.

With https, i have an error

How can i acces in localhost?

Or this an another machine in local network ?

Thanks for your answers

I had the same issue, apparently apache server does not set the domain name for local use. 

You can access it by entering the IP of your machine and subdomain name.

http://<ip_add>/<sub-domain>

Also in the admin module set the domain address to your IP address.Hope that helps.