Android Question install Android SDK error

[denik]

Dear sirs!
When install Android SDK with ver 7.8, I receive such message

and then

What does it mean?

And are really more then 200 files really need?

 

[Erel]

1. Moved to the questions forum.
2. Please don't post such large images. It makes the post unreadable.
3. See the installation instructions: https://www.b4x.com/b4a.html#installation
The folder structure is incorrect.