...

examcloud-core-basic-service/src/main/java/cn/com/qmth/examcloud/core/basic/service/impl/AuthServiceImpl.java

@@ -265,7 +265,7 @@ public class AuthServiceImpl implements AuthService {
 
 		Long times = redisClient.get(key, Long.class);
 
-		return times > 5;
+		return null != times && times > 5;
 	}
 
 	/**