References are not appearing when using \cite{} in the dissertation neither in the text nor in the Bibliography

Question

I am using the template provided by my university to write my dissertation. Now the dissertation is done but I'm having a problem with the references. The references are not appearing when using \cite{This_Article} in the text. what is appearing the just the name "This_Article" in the text. Though, I have a file biblio.bib for the references. Also there is no bibliography appearing at the last page at all. I added the latex code hoping to get some help:

\documentclass[english]{amu_these}
%\usepackage{floatrow}
\usepackage{caption}
\usepackage{graphicx,cancel,xcolor,hyperref,comment,graphicx,geometry}
 \usepackage{subfig}
 \usepackage[english]{babel}
\usepackage{amssymb}
\usepackage{tikz}
 \usepackage{amsmath}
\usepackage{tikz}
\usepackage{graphicx,url,etoolbox}
\usepackage{lipsum}
\usepackage{dsfont}
\DeclareMathOperator{\supp}{supp}
 \usepackage{amsthm}
\newtheorem{theoreme}{Theorem}[section]
\newtheorem{pro}[theoreme]{Proposition}
\newtheorem{lemma}[theoreme]{Lemma}
\newtheorem{rem}[theoreme]{Remark}
\newtheorem{corollary}[theoreme]{Corollary}
\newtheorem{definition}[theoreme]{Definition}
\theoremstyle{definition}
\addto\captionsfrench{\renewcommand\proofname{proof}}
\numberwithin{equation}{section}
\newcommand\xqed[1]{%
  \leavevmode\unskip\penalty9999 \hbox{}\nobreak\hfill
  \quad\hbox{#1}}
\newcommand\demo{\xqed{$\square$}}
\usepackage{caption}
\usepackage{float}
\usetikzlibrary{decorations.pathmorphing,patterns,scopes,intersections,calc}
 \usepackage{tikz}
\usepackage{graphicx,url,etoolbox}
\usepackage{lipsum}
\usepackage{dsfont}
 \usepackage{amssymb}
\newcommand{\isEquivTo}[1]{\underset{#1}{\sim}}
\hypersetup{bookmarks, colorlinks, urlcolor=blue, citecolor=blue, linkcolor=blue, hyperfigures, pagebackref,
    pdfcreator=LaTeX, breaklinks=true, pdfpagelayout=SinglePage, bookmarksopen=true,bookmarksopenlevel=2}
 \chead{}
    \pdfbookmark[0]{Page de titre}{titre}
    \thispagestyle{empty}
    \input{tex/titre.tex}
                                        %% licence
    \newpage
    \pdfbookmark[0]{Affidavit}{affidavit}
    \thispagestyle{empty}
    \input{tex/licence}
\chapter*{Abstract}                 %% abstract
\addcontentsline{toc}{chapter}{Abstract}
\selectlanguage{english}
\input{tex/abstract}



\chapter*{Remerciements}            %% remerciements
\addcontentsline{toc}{chapter}{Remerciements}
\input{tex/remercie}



\microtypesetup{protrusion=false}   %% désactive la protrusion (TOC LOFT GLS)
\selectlanguage{english}
\tableofcontents                    %% TOC
\listoffigures                      %% LOF
\listoftables                       %% LOT
\printglossary[                     %% Acronymes
    type=\acronymtype,
    title={Liste des acronymes},
    toctitle={Liste des acronymes}
    ]
\printglossary[                     %% Glossaire
    title={Glossaire},
    toctitle={Glossaire}
    ]
\printglossary[                     %% Nomenclature
    type=notation,
    title={Nomenclature},
    toctitle={Nomenclature}
    ]
\microtypesetup{protrusion=true}    %% rétabli la protrusion

\ohead{\leftmark\ifstr{\rightmark}{\leftmark}{}{ -- \rightmark}}    %% place le chapître et la partie en en-tête

\selectlanguage{english}
\chapter*{List of Symbols}
\markboth{List of Symbols}{}
\addcontentsline{toc}{chapter}{List of Symbols}
\input{tex/LOS}
\chapter{ Preliminaries}
    \input{tex/chap0}
\chapter{Chapter2}
\input{tex/chap2}


\chapter{Chapter3}
\input{tex/chap3}
 \appendix

\newpage

\printbibliography[                 %% bibliographie
heading=bibintoc
    ]
\chapter*{ANNEXES}

\end{document}

this is what I'm getting in the texts: ...the first volume of his book \cite{bennett} on the history of Control Engineering quoting the... -> the first volume of his book Bennett on the history of Control Engineering quoting the