Storage Replication Adapter （ SRA ）：レプリカデバイス上のデータの同期に失敗しました
環境
Storage Replication Adapter （ SRA ） 9.8 、 9.8P1
問題
SRA の syncOnce 処理が次のエラーで失敗します。
Failed to sync data on replica devices. SRA command 'syncOnce' failed. Unknown error. Check SRM log files for verification of errors.
SRA のログを確認すると、次のようなログが表示されます。
2021-12-17T03:48:52,544Z (DEBUG) - Invoking snapmirror update call
2021-12-17T03:48:53,922Z (DEBUG) - Batch Snapmirror transfer is in progress...Please wait
2021-12-17T03:48:53,922Z (DEBUG) - going to sleep for 500 milliseconds.
2021-12-17T03:48:54,960Z (ERROR) [] java.lang.NumberFormatException: null
2021-12-17T03:48:54,960Z (ERROR) [] at java.base/java.lang.Long.parseLong(Long.java:662)
2021-12-17T03:48:54,960Z (ERROR) [] at java.base/java.lang.Long.valueOf(Long.java:1151)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.vasa.vvol.server.zapi.AeonfluxConverter.convertToSnapmirrorInfoBean(AeonfluxConverter.java:82)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.vasa.vvol.server.zapi.VServerUtilV2.getSnapmirrors(VServerUtilV2.java:102)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.sra.model.request.SyncOnceCommand.checkStatus(SyncOnceCommand.java:585) >> checkstatus of snapmirror transfer
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.sra.model.request.SyncOnceCommand.waitForUpdateCompletion(SyncOnceCommand.java:616)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.sra.model.request.SyncOnceCommand.buildCommand(SyncOnceCommand.java:297)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.sra.model.request.SyncOnceCommand.buildCommand(SyncOnceCommand.java:35)
2021-12-17T03:48:54,960Z (ERROR) [] at com.netapp.sra.model.request.ConnectionsCommand$1.execute(ConnectionsCommand.java:74)