...

examcloud-core-examwork-api-provider/src/main/java/cn/com/qmth/examcloud/core/examwork/api/controller/ExamController.java

@@ -420,7 +420,9 @@ public class ExamController extends ControllerSupport {
 		for (String key : propertyKeys) {
 			DynamicEnum de = manager.getByName(key);
 			ExamPropertyEntity one = examPropertyRepo.findByexamIdAndKeyId(examId, de.getId());
-			map.put(key, one.getValue());
+			if (null != one) {
+				map.put(key, one.getValue());
+			}
 		}
 
 		return map;