Using biblatex for footcites / footcite no reference to .bib file

Question

I want to use footcite. The problem is, that in the footcite it self it doesn't use the informations from the .bib file.

From my file:

\documentclass[12pt,a4paper]{article}

\usepackage[utf8]{inputenc}
\usepackage[german]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{makeidx}
\usepackage{graphicx}
\usepackage{lmodern}
\usepackage{tocbasic}
\usepackage{biblatex}
\usepackage[left=4cm,right=2cm,top=2cm,bottom=2cm]{geometry}

\bibliography{Master}

\author{xx}

\begin{document}

\include{./Titelseite}

\tableofcontents

\include{./Kap_1}
%\include{./Kap_2}
%\include{./Kap_3}
%\include{./Kap_4}

\printbibliography

\end{document}

Master.bib:

@book{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
}

Kap_01:

\section{Intro}
Blabla.\footcite{A01}

The output I get is a footcite^1 but in the bottom of the page there stands no informations about the book but rather just A01 and nothing else. Also using styles like style=mla style=authordate does not change anything.

Also it doesn't print the bibliography. Why?

Any idea what I'm doing wrong?