Input and biber

Question

I think it's a trivial question, but I cannot find the answer elsewhere. I am using a file to include other files through \input. Everything works fine except from bibliography, which does not work and if I use the BibTeX processing the following appears:

This is BibTeX, Version 0.99d (TeX Live 2021) The top-level auxiliary file: main.aux I found no \citation commands---while reading file main.aux I found no \bibdata command---while reading file main.aux I found no \bibstyle command---while reading file main.aux (There were 3 error messages)

The information about biblatex are given in the preamble file, and they work in normal standalone files. How should I do to have the bibliography printed through this method?

A MWE follows:

SETUP FILE

% !TeX encoding = UTF-8
% !TeX TS-program = xelatex
% !TeX spellcheck = de_DE
% !TeX root = Example.tex
% !BIB TS-program = biber
\documentclass[ngerman]{book}
\usepackage[no-math]{fontspec} 
\usepackage{babel}
\usepackage[backend=biber,style=authortitle]{biblatex} 
\addbibresource{bibliography.bib}

MAIN

  \input{setup}
\begin{document}

  \input{Text}

\clearpage

    \input{Biblio}

\end{document}

Text file:

Hallo, \cite{Muller}

Biblio file:

\printbibliography

bibliography.bib file's contents:

@book{Muller,
editor = {Müller, Gotfried},
title = {Example},
publisher = {Someone},
address = {Somewhere}
}