Sometimes you want to make that scheduler run again, damnit. You need to clear the log and pretend that the scheduler hasn't run ever/in a long time. So throw this at your database, replacing the ID with that of the Scheduler you're working on.

Reset Scheduler Log

delete from job_queue 
where scheduler_id = '6b867112-a876-a867-2df1-5088b60bb6d2';

update schedulers set last_run = subdate(now(),360) 
where id = '6b867112-a876-a867-2df1-5088b60bb6d2';