fix bug

src/modules/examwork/view/onlineExam.vue

@@ -1134,7 +1134,7 @@ export default {
         enable: "true",
         examLimit: "false",
         specialSettingsEnabled: false,
-        specialSettingsType: "",
+        specialSettingsType: null,
         properties: {
           IS_OBJ_SCORE_VIEW: "true",
           IS_STRANGER_ENABLE: "false",