add

src/InternshipSystem.Api/Controllers/InternshipTypesController.cs

@@ -38,6 +38,7 @@ namespace InternshipSystem.Api.Controllers
             var edition = 
                 await Context.Editions
                     .Include(e => e.AvailableInternshipTypes)
+                        .ThenInclude(e => e.InternshipType)
                     .Where(e => e.Id.Equals(user.EditionId))
                     .FirstOrDefaultAsync(cancellationToken: cancellationToken);