Unknown role turned in population

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1

Summary:
Maybe too many people, but less than 20.

Steps to reproduce:
Now appears after pressing F5.

Attachments:

develop-2720 (x64)
...h/services/server/population/population_faction.luac:71: unknown role turned in population
stack traceback:
	radiant/modules/common.luac:46: in function <radiant/modules/common.luac:46>
	[C]: in function 'error'
	...h/services/server/population/population_faction.luac:71: in function 'create_new_citizen'
	candledark/data/buffs/plagued/plagued.lua:19: in function '_fn'
	radiant/controllers/timer_controller.luac:33: in function 'fire'
	radiant/controllers/time_tracker_controller.luac:9: in function <radiant/controllers/time_tracker_controller.luac:9>
	[C]: in function 'xpcall'
	radiant/controllers/time_tracker_controller.luac:9: in function 'set_now'
	...earth/services/server/calendar/calendar_service.luac:133: in function 'fn'
	radiant/modules/events.luac:97: in function <radiant/modules/events.luac:96>
	[C]: in function 'xpcall'
	radiant/modules/events.luac:96: in function 'trigger'
	radiant/modules/events.luac:121: in function '_trigger_gameloop'
	radiant/modules/events.luac:150: in function '_update'
	radiant/server.luac:19: in function <radiant/server.luac:17>

Versions and Mods:
a13dev2720