i got it wrking but this?

[logopogo1231]

pip install -r requirements.txt
pip : The term 'pip' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

• pip install -r requirements.txt

•   + CategoryInfo          : ObjectNotFound: (pip:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  

[DgigolaD]

write pip3 install -r requirments.txt if that didnt work u ca use sudo pip3 install -r requirements.txt

[Ignacio J. Perez Portal]

Make sure you have pip and python installed.
Also, make sure python is added to your PATH

[Ivan Nikolskiy]

• Linux
  python3 -m pip install -r requirements.txt

• Windows (do not use windows)
  py -m pip install -r requirements.txt