The file you are in is in src/components, right? And are asking for file in ./components/Data? Since that is relative to your current file location, it looks like you are trying to get src/components/components/Data. Have you tried:
It is light because you aren’t using Data. You are using Meme so you should check your JSX file for what you are exporting and what you import should be the name of the component you use.
Example:
import Data from './Data'
...
<div>
<Header />
<Data />
</div>
Note: The above is assuming that Data was the filename, export, and import.
Or you should be able to get the “light color” to go away by
console.log(Data)
Like @wdpronovost is saying, the editor is just telling you, “Hey, you’ve imported/declared this variable but you aren’t using anywhere - is this a mistake?”.