Port busy (fingerprint as608)

Hi there. I would like to ask for your help and guidance. I been uploading my sketch in arduino ide and it give responds as port is busy. After a while, it says 'sketch error'. I tried a lot of things, uplugged and unplugged the USB, install the driver.

what is weird is when I upload my program on smoke sensor and buzzer,it works well and my components function just like my codes. I don't know what is the problem.

I use fingerprint model as608 and arduino wifi rev2

Hi @jisungaegi ,

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