The Reference numbers are disappeared. Please help

The number for each list of Ref is not shown. Please help me.

    % !TEX TS-program = pdflatex
% !TEX encoding = UTF-8 Unicode

% This is a simple template for a LaTeX document using the "article" class.
% See "book", "report", "letter" for other types of document.

documentclass[11pt]{article} % use larger type; default would be 10pt
usepackage{setspace}
usepackage{apacite}
usepackage[utf8]{inputenc} % set input encoding (not needed with XeLaTeX)
usepackage{amsmath}% Added by Palm for writing Math symbols

usepackage{graphicx}
graphicspath{ {./images/} }

usepackage{multirow}
usepackage{array}

%%% Examples of Article customizations
% These packages are optional, depending whether you want the features they provide.
% See the LaTeX Companion or other references for full information.

%%% PAGE DIMENSIONS
usepackage{geometry} % to change the page dimensions
geometry{a4paper} % or letterpaper (US) or a5paper or....
% geometry{margin=2in} % for example, change the margins to 2 inches all round
% geometry{landscape} % set up the page for landscape
%   read geometry.pdf for detailed page layout information

usepackage{graphicx} % support the includegraphics command and options

% usepackage[parfill]{parskip} % Activate to begin paragraphs with an empty line rather than an indent

%%% PACKAGES
usepackage{booktabs} % for much better looking tables
usepackage{array} % for better arrays (eg matrices) in maths
usepackage{paralist} % very flexible & customisable lists (eg. enumerate/itemize, etc.)
usepackage{verbatim} % adds environment for commenting out blocks of text & for better verbatim
usepackage{subfig} % make it possible to include more than one captioned figure/table in a single float
% These packages are all incorporated in the memoir class to one degree or another...

%%% HEADERS & FOOTERS
usepackage{fancyhdr} % This should be set AFTER setting up the page geometry
pagestyle{fancy} % options: empty , plain , fancy
renewcommand{headrulewidth}{0pt} % customise the layout...
lhead{}chead{}rhead{}
lfoot{}cfoot{thepage}rfoot{}

%%% SECTION TITLE APPEARANCE
usepackage{sectsty}
allsectionsfont{sffamilymdseriesupshape} % (See the fntguide.pdf for font help)
% (This matches ConTeXt defaults)

%%% ToC (table of contents) APPEARANCE
usepackage[numbers,sort&compress]{natbib}
usepackage{filecontents}
usepackage[nottoc,notlof,notlot]{tocbibind} % Put the bibliography in the ToC
usepackage[titles,subfigure]{tocloft} % Alter the style of the Table of Contents
renewcommand{cftsecfont}{rmfamilymdseriesupshape}
renewcommand{cftsecpagefont}{rmfamilymdseriesupshape} % No bold!
providecommand{keywords}[1]
{
  small    
  textbf{textit{Keywords:}} #1
}
usepackage{authblk}
usepackage{hyperref}
%%% END Article customizations

%%% The "real" document content comes below...

title{...

bibliographystyle{unsrt}
bibliography{References}
end{document}