Library missing when project files copied into another system

i made project in kicad but when i copy that project files into another laptop it don’t get library files anyone else facing same problem? please share solution for this problem if any one knows.

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Thank you so much.
I am facing another problem in PCB. I am using Kicad 5.1.6 software and it doesn’t show pads on PCB it only shows silk of that components.