My Arduino Nano Eror

I ve some trouble here, please someone who know about it tell me, im sorry before if my english bad. I ve arduino nano but yesterday i ve using for my project, connect it to my servo but when i input it to GND and 5v my nano looks like smelled bad and smooky, i dont know why, but any one who know plis reply this messeage, Thank u verymuch.

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