Breaking: #82832 - Use at daemon dropped from scheduler¶
See Issue #82832
The functionality to execute tasks via the unix "at daemon" (atd) has been dropped.
The following method has been dropped:
If this feature has been used, existing tasks may not be executed anymore.
The feature "useAtdaemon" had to be explicitly enabled in scheduler extension configuration. In general it was very sparsely used.
Switch to cron execution instead.