Just to add more information to this issue.
I have installed the VM and though it works well. It also comeback with the same error as described above, meaning only the front page works well.
However, if I "Add a card" then, when I try to click on that new card, it only workls if I'm on the browser of the actual VM. But,
When I access WEKAN from host machine broser (instead of VM) everything works just fine for the main page (which is accessed by VM IP address). Howver, if I try to access (meaning click on) any Added card, it goes to localhost/link and gets the "Server not found" error.
Interestingly enough is the following:
On the page I get the error (meaning I'm on the Host server) I can manually replace the word localhost by insert the ipaddres (of the WEKAN machine) and all works ok for that page.
Similar behaviour for all other cards.
This lead me to think that localhost is a setting than need to be replaced with machine IPaddress. However, I don't know where to do this.
Any help? Thoughts or ideas are more than welcome