Failed to unlink SHM sub_ietf-subscribed-notifications.oper (No such file or directory)

[rydy]

Hi, I'm using version 2.2.19, When "Failed to unlink SHM sub_ietf-subscribed-notifications.oper (No such file or directory)" occurs, netopeer2-server cannot be started. Is there any other way except redeploy sysrepo? What causes this error?

[INF]: SR: Connection 16683 created.
[INF]: SR: Session 16694 (user "root", CID 16683) created.
[WRN]: SR: Recovering module "ietf-subscribed-notifications" operational get subscription of CID 12.
[ERR]: SR: Failed to unlink "/dev/shm/OM_DUsub_ietf-subscribed-notifications.oper.d4cc6de2" SHM (No such file or directory).
[ERR]: NP: Subscribing for providing "ietf-subscribed-notifications" state data failed (System function call failed).
[ERR]: NP: Server data subscribe failed.
[INF]: NP: Server terminated.

thanks.