You have updated Acronis Agent for Linux to build 22750 (version 9.0 update 2).
After update, you see these alerts in cyber Protection Console, even if scheduled backups completed successfully:
The backup did not start as scheduled. Either is was skipped automatically because the previous backup was still running, or a backup schedule error had occurred.
Issue in the product caused by the changes in format of start times for scheduled tasks.
Acronis development team is working on the issue. The fix will be available in next updates.
Meanwhile, clear alerts manually. To prevent further alerts from successful backups, disable and then re-enable the affected plan (either from Plans -> select the affected plan -> click Disable -> click Enable; or from Devices -> select the affected device and plan -> click the elypsis (...) icon -> select Disable -> select Enable).