This occurs when the server has a hang up, possibly due to a code defect, but LUA can also cause a hang state. The spell_id will point to the LUA script involved in this case.
14:27:31 E World : Zone PriestCave main loop is hung for 91341 milliseconds; attempting shutdown. 14:27:31 E World : Zone PriestCave watchdog diagnostics (zone_id=859 instance_id=8910): main=
14:29:35 E World : Zone PriestCave main loop is hung for 215357 milliseconds; attempting to cancel zone threads. 14:29:35 E World : Zone PriestCave watchdog diagnostics (zone_id=859 instance_id=8910): main= shutdown_requested_age_ms=124016
- TBD more details, behavior, expectations..