Syntax error when installing dependencies

[nyxxxia]

When i choose the option 0 in main.py, it stops with a syntax error.
Here's the log:
`Welcome to checkra1n.py
by Sakurai07
#########################
[0]. Install dependencies (MUST DO once)
[1]. Jailbreak
[2]. GUI Jailbreak
[3]. Github
[4]. Guide
[5]. exit
type help for help
$ 0
0
'pip' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\Eriquito\Checkra1n-Windows-GUI>copy libusb0.dll c:/windows/system32
The syntax of the command is incorrect.`