Time was approaching night, and the outhouses needed to be emptied. Yellow alert for the emptying tidying job, but after they're emptied and refilled, yellow alert is permanently on, and cannot (re)toggle yellow alert off. Now is a permanent yellow border and marks for top priority that can't be cleared.
saved and closed the map, reloaded with yellow alert still on.
Cannot find ONI output_log.txt with directions below at common\OxygenNotIncluded\OxygenNotIncluded_Data\output_log.txt - file doesn't exist