I have Wekan installed on Ubuntu Server 17.04, I also tried 16.04 with the same result.
I installed Wekan using Snap by running "sudo snap install wekan-ondra", and thats it.
When I go to "192.168.1.237:8080", i get greeted with a Wekan login screen, I try to register an account and it says "internal server error", however it lets me login anyway, so I do.
Most of the features seem to work except when I try to click on a card, it redirects to "http://127.0.0.1/b/peJELJqrgJiXLcLuo/welcome-board/mHMMnkXaAPz8qDuum", obviously this just causes my browser to give me a "This site can’t be reached" error.
Now if I change in the address bar, the "127.0.0.1" to "192.168.1.237:8080" and leave everything else the same then it shows the card page correctly like I would expect.
Im not sure what to do here, I have poked around the forums and haven't come across anyone with the same issue.