fix error (#11171)

code/modules/events/bureaucratic_error.dm

@@ -6,21 +6,21 @@
 
 /datum/round_event/bureaucratic_error
 	announceWhen = 1
-	var/datum/job/chosen_job
+	var/chosen_job_title
 
 /datum/round_event/bureaucratic_error/setup()
 	var/error_count = 10
 	while(error_count--)
 		var/datum/job/J = SSjob.GetJob(pick(get_all_jobs()))
 		if(!J || J.lock_flags)
 			continue
-		chosen_job = J
+		chosen_job_title = J.title
 		break
-	if(!chosen_job)
+	if(isnull(chosen_job_title))
 		return kill()
 
 /datum/round_event/bureaucratic_error/announce(fake)
 	priority_announce("A recent bureaucratic error in the Organic Resources Department may result in personnel shortages in some departments and redundant staffing in others.", "Paperwork Mishap Alert", SSstation.announcer.get_rand_alert_sound())
 
 /datum/round_event/bureaucratic_error/start()
-	SSjob.set_overflow_role(chosen_job)
+	SSjob.set_overflow_role(chosen_job_title)