Biblatex problem, the list doesn't appear

Question

I'm trying to customize my bibliography list, I have a problem. I'm using Biber, because it´s mandatory for \DeclareLabelalphaTemplate. The .bib file name is the same as in the code.

I have TexLive which includes Biblatex.

This is the error:

LaTeX Warning: Citation 'averroes/hannes' on page 1 undefined on input line 26.

LaTeX Warning: Citation 'averroes/hannes' on page 1 undefined on input line 28.

(/usr/local/texlive/2013/texmf-dist/tex/generic/oberdiek/se-ascii-print.def) [1]

LaTeX Warning: Empty bibliography on input line 31.

(/Users/Isai/Documents/Info/Documentos/Estudios estacionamientos/LaTex/.texpadtmp/Example.aux)

LaTeX Warning: There were undefined references.

Package biblatex Warning: Please (re)run Biber on the file: (biblatex) Example (biblatex) and rerun LaTeX afterwards.

\documentclass[a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[backend=biber,style=alphabetic,backend=biber]{biblatex}
\usepackage{hyperref}
\addbibresource{Untitled.bib}

\DeclareLabelalphaTemplate{
  \labelelement{
    \field[final]{shorthand}
    \field{label}
    \field[strwidth=3,strside=left,ifnames=1]{labelname}
    \field[strwidth=1,strside=left]{labelname}
  }
  \labelelement{
    \field[strwidth=2,strside=right]{year}
  }
}

\begin{document}
Filler text \parencite{averroes/hannes}

It's weird to text like this: \cite{averroes/hannes}

\newpage
\printbibliography
\end{document}