Error when only deploying a dimension on SSDT
I don't speak Portuguese very well  but it looks as if it's saying that it can't connect to the datasource.

Please verify if your Analysis services service account has access to the data source.

Keep in mind that, unless you specify the username and password the processing is done using the Analysis Services service account while when you browse data from within visual studio you are using your own account.

Please read through Set Impersonation Options which explains in detail how the different data source options work.