Fatal error: Uncaught exception 'MongoResultException' with message 'master.myzx.db:17017: Index with name: input_time_-1 already exists with a different name' in /my_data/web/home/www/framework/plugins/SMongo.class.php:272 Stack trace: #0 /my_data/web/home/www/framework/plugins/SMongo.class.php(272): MongoCollection->ensureIndex(Array, Array) #1 /my_data/web/home/www/service/ServiceMongo.class.php(31): SMongo->find(Array, Array, 1000, 0, Array) #2 /my_data/web/home/www/service/ServiceQuestion.class.php(72): ServiceMongo->mongofind(1, 1000, Array, Array, Array) #3 /my_data/web/home/www/web/main/default/wenti.page.php(116): ServiceQuestion->dataList(1, Array, 8) #4 /my_data/web/home/www/web/main/default/wenti.page.php(39): wenti->_info(Array) #5 [internal function]: wenti->pageInit(Array) #6 /my_data/web/home/www/framework/SlightPHP.php(278): call_user_func(Array, Array) #7 /my_data/web/home/www/web/main/index.php(22): SlightPHP::run() #8 {main} thrown in /my_data/web/home/www/framework/plugins/SMongo.class.php on line 272