There has no oplog collection in mongo db server

[appnaa]

源端数据库初始化了副本集，也添加了keyfile文件，只有这一个主节点，这样可以吗？但是启动mongoshake之后还是
./collector.linux -conf=collector.conf
[16:20:27 CST 2023/06/01] [CRIT] (github.com/alibaba/MongoShake/v2/collector/coordinator.(*ReplicationCoordinator).sanitizeMongoDB:143) There has no oplog collection in mongo db server
no oplog ns in mongo. See https://github.com/alibaba/MongoShake/wiki/FAQ#q-how-to-solve-the-oplog-tailer-initialize-failed-no-oplog-ns-in-mongo-error
[16:20:27 CST 2023/06/01] [CRIT] (main.startup:145) run replication failed: no oplog ns in mongo. See https://github.com/alibaba/MongoShake/wiki/FAQ#q-how-to-solve-the-oplog-tailer-initialize-failed-no-oplog-ns-in-mongo-error