This ninja mantis depicts a Heisenbug - a type of software bug that disappears as soon as you try to debug it.
禁止Heisenbugs bug、forbidden、heisenbug、mantis、ninja、prohibited、software bug、traffic sign 竊聽器、被禁止、Heisenbug、螂、忍者、被禁止、軟件錯誤、交通標誌 資料來源:openclipart ( https://openclipart.org/ )