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TrailHead:Defining Component Attributes

First we create Lightning App which is that we need to create helloAttributes.cmp , it prompt error saying DUPLICATE_VALUE while I haven't create any component yet.With this error, I am not sure how to proceed with the rest.
Gowri Shankar PalanaismayGowri Shankar Palanaismay
Hi Unidha,
click setup -----> in search box type "Lightning Components" there you will find the component created. I faced the same error while following trail head.

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