The Time Slicing job stopped running in the environment.
Release : 15.9.2
The error is benign and occurs momentarily.
ERROR 2021-05-22 11:21:51,735 [Thread-4] niku.njs (clarity:admin:xxxxxxx:none) Error waiting for job lock
at java.base/java.lang.Object.wait(Native Method)
As long as the Time Slicing job is completing on time and there are no deadlock errors, which is indicative of a database problem/incident, then this error can be ignored.