Concept Dictionary Maintenance empty

Just installed a fresh Bahmni on a server. On ID/openmrs, there are no concepts at all. When I click on Administration, Concept Dictionary Management, there is no list, and I can type in whatever I want in the search, it gives no results. When I click on export concepts, I do get a csv file with some entries. Where is the problem?

Did you try “Rebuilding the Search Index” soon after Bahmni installation?