I do not understand the script, I wanted to know what that means … It appears every time I enter. 
release-790 (x64)[M]
@stonehearth/components/ai/ai_component.lua:560: (1616640 Yui Papp) has not yielded after 10 ai spins. Are they in a bad state? Last abort reasons: <resource is not currently harvestable (x10)>
stack traceback:
radiant/modules/commons.lua:46: in function ‘report_traceback’
radiant/modules/commons.lua:230: in function ‘verify’
stonehearth/components/ai/ai_component.lua:560: in function <stonehearth/components/ai/ai_component.lua:499>
[C]: in function ‘xpcall’
radiant/modules/commons.lua:66: in function ‘xpcall’
stonehearth/components/ai/ai_component.lua:499: in function ‘_thread_main’
stonehearth/services/server/threads/thread.lua:273: in function <stonehearth/services/server/threads/thread.lua:270>
[C]: in function ‘xpcall’
radiant/modules/commons.lua:66: in function ‘xpcall’
stonehearth/services/server/threads/thread.lua:270: in function ‘f’
radiant/lib/env.lua:15: in function <radiant/lib/env.lua:14>