Bug repport : "Engine Error"

Hello, I have sometimes this “alert”, I don’t really what doesn’t work but still, I wanted to repport it :wink:
release-559 (x64)(2382823 Leona Carlwine) (stonehearth:farm) bad frame transition to “unit_not_ready” from "running"stack traceback:
[C]: in function 'fn’
stonehearth/services/server/threads/thread.lua:322: in function 'private_msg’
stonehearth/services/server/threads/thread.lua:515: in function '_dispatch_messages’
stonehearth/services/server/threads/thread.lua:379: in function <stonehearth/services/server/threads/thread.lua:360>
[C]: in function 'suspend’
stonehearth/ai/actions/run_effect_action.lua:66: in function <stonehearth/ai/actions/run_effect_action.lua:38>
[C]: ?
[C]: ?
[C]: in function ‘execute’
…onehearth/ai/actions/plant_field_adjacent_action.lua:45: in function ‘_run_till_animation’
…onehearth/ai/actions/plant_field_adjacent_action.lua:52: in function <…onehearth/ai/actions/plant_field_adjacent_action.lua:49>

[C]: in function 'run’
stonehearth/components/ai/ai_component.lua:541: in function <stonehearth/components/ai/ai_component.lua:525>
[C]: in function 'xpcall’
radiant/modules/common.lua:257: in function 'xpcall’
stonehearth/components/ai/ai_component.lua:525: in function '_thread_main’
stonehearth/services/server/threads/thread.lua:249: in function <stonehearth/services/server/threads/thread.lua:246>
[C]: in function 'xpcall’
radiant/modules/common.lua:257: in function 'xpcall’
stonehearth/services/server/threads/thread.lua:246: in function 'f’
radiant/lib/env.lua:15: in function <radiant/lib/env.lua:14>