title: Bibliography is not showing up in Overleaf
body: <p>I am using this template in my overleaf Report:</p>
  <p><a href="https://www.overleaf.com/project/60c75f5e234ec24080f0ea6a" rel="nofollow noreferrer">https://www.overleaf.com/project/60c75f5e234ec24080f0ea6a</a></p>
  <p>If link is not accesible here is the code:</p>
  <pre><code>\documentclass [11pt]{article}
  
  \title{Fuel Cell Technology\\\medskip An Annotated Bibliography}
  \author{Titus Barik (titus@barik.net)\\Georgia Institute of Technology}
  
  \begin{document}
  \maketitle
  \nocite{*}
  \bibliographystyle{IEEEannot}
  \bibliography{annot}
  \end{document}
  </code></pre>
  <p><code>annot.bib file</code></p>
  <pre><code>@InProceedings{Wang99,
    author    = {Yanqing Wang and Christine MacKenzie},
    title     = {Object Manipulation in Virtual Environments: Relative Size Matters},
    booktitle = {Proc. CHI'99},
    year      = {1999},
    month     = {May},
    annote    = {.}
  }
  
  %%
  
  @InProceedings{Feiner93,
    author    = {S. Feiner and B. MacIntyre and M. Haupt and E. Solomon},
    title     = {Windows on the World: {2D} Windows for {3D} Augmented Reality},
    booktitle = {Proc. UIST'93},
    year      = {1993},
    pages     = {145-155},
    annote    = {I.}
  }
  </code></pre>
  <p>I am new to latex coding but fixed most of the bugs but stuck at printing the references in the final page of my report.</p>
  <p>I took the contents <code>annot.bib</code> file and pasted in my overleaf report as follows:</p>
  <pre><code>\bibliography{annot}
  \end{document}
  </code></pre>
  <p>Output is only showing <code>References</code> as heading and no references inside.</p>
  <p>My code:</p>
  <p><a href="https://www.overleaf.com/read/wnhgtcggncff" rel="nofollow noreferrer">https://www.overleaf.com/read/wnhgtcggncff</a></p>
  <p>My file:</p>
  <pre><code>    \documentclass[fleqn,10pt]{olplainarticle}
  % Use option lineno for line numbers 
  \usepackage{graphics}
  %\newcommand{\newpar}{\vspace{.2in}\noindent}
  \usepackage{hyperref}
  
  \let\oldhref\href
  \renewcommand{\href}[2]{\oldhref{#1}{\bfseries#2}}
  
  
  \begin{document}
  
  \begin{center}
      \includegraphics[width=0.2\textwidth]{IIT Hyderabad Logo_Final Design.jpeg}
  \end{center}
  
  \begin{center}
  ABC
  \end{center}
  
  
  \section*{abstract}
  
  
  
  \section*{Introduction}
  
  
  \section*{Methods and Materials}
  
  
  \begin{table}[ht]
  \centering
  \begin{tabular}{l|r}
   \\\hline
   \\
  A &amp; B
  \end{tabular}
  \caption{\label{tab:widgets}An exploration table.}
  \end{table}
  
  
  \section*{AL}
  %\label{sec:examples}
  %\noindent
      
  
  
  ……….
  
  
  
  %\subsection*{Figures and Tables}
  
  \begin{figure}
  \centering
      \includegraphics[width=0.7\textwidth]{download.png}
      \caption{Diagram illustrating the three main active learning scenarios.}
      \label{fig:view}
  
   
  \end{figure}
  
  
  \section*{DP}
  
  
  
  \begin{figure}[ht]
  \centering
      \includegraphics[width=0.7\textwidth]{Picture 1.png}
      \caption{Dealing with lack of annotated data}
      \label{fig:view}
  
      \includegraphics[width=0.7\textwidth]{Picture 2.png}
      \caption{Pipeline}
      \label{fig:view}
  \end{figure}
  
  
  
  \begin{figure}[ht]
  \centering
      \includegraphics[width=0.7\textwidth]{dp.png}
      \caption{Architecture Diagram}
      \label{fig:view}
  \end{figure}
  
  
  \section*{Acknowledgments}
  \bibliography{annot}
  
  \end{document}
  </code></pre>
  <p>I am not getting <code>References</code> in Output and getting warning <code>You have used the same label more than once. Check that each \label{...} labels only one item.</code></p>