create course works!

src/main/java/server/controller/CourseController.java

@@ -86,10 +86,12 @@ public class CourseController {
 		GroupParams groupParams = gitlabGroupAPIService.buildGroupParams(course).withName(courseDetails.getName());
 		GitbullCourse gitbullCourse = GitbullCourse.builder().id(courseId).coursePath(course.getPath()).build();
 		courseService.addGitbullCourse(gitbullCourse);
-		Group gitlabGroup = gitlabGroupAPIService.updateGitlabGroup(gitLabApi, course.getPath(), groupParams);
+		gitlabGroupAPIService.createGitlabGroup(gitLabApi, groupParams);
 		model.addAttribute("coreCourse", courseDetails);
-		model.addAttribute("gitlabCourse", gitlabGroup);
 		model.addAttribute("courses", courseService.getManagingCourses(person.getId()));
+		model.addAttribute("course", GitlabGroupDTO.builder().build());
+		model.addAttribute("edition", GitlabGroupDTO.builder().build());
+		model.addAttribute("teacher", TeacherCourseRequestDTO.builder().build());
 		return "course/create";
 //		return "redirect:/course/" + id;
 	}