Cannot upload sketch to nodemcu

I need help with my school project!

I tried to change the serial port from COM 3 to COM 4, but it still cannot do it.

The error message is:-
" the selected serial port serial.serialutil.SerialTimeoutException: Write timeout
does not exist or your board is not connected "

I'm not familiar with the NodeMCU but what does Windows device manager think about your board?

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