fix

examcloud-core-questions-service/src/main/java/cn/com/qmth/examcloud/core/questions/service/impl/PaperDetailUnitServiceImpl.java

@@ -143,7 +143,7 @@ public class PaperDetailUnitServiceImpl implements PaperDetailUnitService {
         if(cpaper.getInUse()!=null&&cpaper.getInUse()==1) {
         	checkUpdate(updateUnit, baseUnit,"试卷已调用,");
         }
-        if(randomPaperQuestionService.existQuestion(updateUnit.getQuestion().getId())) {
+        if(randomPaperQuestionService.existQuestion(baseUnit.getQuestion().getId())) {
         	checkUpdateOption(updateUnit, baseUnit,"小题已被抽题模板使用,");
         }
         Question baseQuestion = baseUnit.getQuestion();