When i making a new app this error is appear

Frappe Framework App Development
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Screenshot from 2017-04-14 12-08-55.png1280×1024 159 KB

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Have you installed any other frappe library (like via pip install ?)

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YouTube?
feature=youtu.be&v=J7kHS_A8A0I&t=13m45s

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Iam tried this steps How to install frappe, ERPNext with ubuntu16 - YouTube
@rmehta