fix undefined

src/features/OnlineExam/Examing/ExamingEnd.vue

@@ -28,7 +28,7 @@
           exam &&
             exam.examType !== 'ONLINE' &&
             showObjectScore &&
-            !examResult.isWarn
+            (examResult && !examResult.isWarn)
         "
         class="qm-big-text score-text"
       >