I’m sorry, but I released a version of openconceptlab with a broken UI. I will fix it ASAP.
Update: Taking a step back. I heard about an issue with the UI earlier this week and assumed you had the same, but it is most likely not the case. I just tested and it works for me…
http://localhost:8080/openmrs/owa/openconceptlab/index.html#/ is the entry url.
The base url is empty in my OWA config.
Also the owa should be automatically deployed with a module. No need to do it manually. Please make sure you have the latest version of the Open Web Apps module (1.8.0) as well if it is not working that way.
Lastly, aside from the page being blank, do you see any errors in browser console?