tidb lightning encountered error: config file contained unknown configuration options: tikv-importer.sorted-kv-dir

[2020/12/24 11:09:40.781 +08:00] [ERROR] [main.go:78] [“tidb lightning encountered error stack info”] [error=“config file contained unknown configuration options: tikv-importer.sorted-kv-dir”] [errorVerbose=“config file contained unknown configuration options: tikv-importer.sorted-kv-dir\ngithub.com/pingcap/tidb-lightning/lightning/config.(*Config).LoadFromTOML\ \t/home/jenkins/agent/workspace/build_lightning_master/go/src/github.com/pingcap/tidb-lightning/lightning/config/config.go:340\ngithub.com/pingcap/tidb-lightning/lightning/config.(*Config).LoadFromGlobal\ \t/home/jenkins/agent/workspace/build_lightning_master/go/src/github.com/pingcap/tidb-lightning/lightning/config/config.go:269\ngithub.com/pingcap/tidb-lightning/lightning.(*Lightning).RunOnce\ \t/home/jenkins/agent/workspace/build_lightning_master/go/src/github.com/pingcap/tidb-lightning/lightning/lightning.go:136\ main.main\ \t/home/jenkins/agent/workspace/build_lightning_master/go/src/github.com/pingcap/tidb-lightning/cmd/tidb-lightning/main.go:75\ runtime.main\ \t/usr/local/go/src/runtime/proc.go:203\ runtime.goexit\ \t/usr/local/go/src/runtime/asm_amd64.s:1357”]

[2020/12/24 11:09:40.781 +08:00] [ERROR] [main.go:79] [“tidb lightning encountered error”] [error=“config file contained unknown configuration options: tikv-importer.sorted-kv-dir”]