Compilation error in IEEE format latex file

Question

So I am writing a latex code based on IEEE format , the format does not support jpeg or Png options , I uploaded the files in eps format. Earlier when there was only one picture it was compiling fine , but after adding 4 more pics now its showing compilation errors. I am using Overleaf.

\documentclass[]{IEEEphot}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[leqno]{amsmath}
\newtheorem{theorem}{Theorem}
\newtheorem{lemma}{Lemma}

\begin{document}

\title{My title}

\author{The authors}

\maketitle

\begin{abstract}
 
\end{abstract}

\begin{IEEEkeywords}
Some keywords
\end{IEEEkeywords}

\section{Introduction}

A beautilful introduction

\section{Some title}

Some text

\begin{center}
    \includegraphics[height=6cm, width=7.5cm]{image2_w.eps}\\
    \caption{A nice caption}
\end{center}

Some more text

\begin{center}
    \includegraphics[height=7cm, width=7.5cm]{Screenshot (32).eps}\\
    \caption{Figure 2: PWE method algorithm }\\
    \includegraphics[height=7cm, width=7.5cm]{Screenshot (42).eps}\\
    \caption{Figure 3: RCWA method algorithm }
\end{center}

\section{Yet another title}

And still more text

\section{Results}

And again

\begin{figure}[h!]
    \includegraphics[width=.24\textwidth]{bndsqr.eps}\hfill
    \includegraphics[width=.24\textwidth]{efieldMoneptfive.eps}\hfil
    \\[\smallskipamount]
    \includegraphics[width=.24\textwidth]{efieldtauoneptfive.eps}\hfill
    \includegraphics[width=.24\textwidth]{efieldXoneptfive.eps}
    \\[\smallskipamount]

    Now, we have plotted the transmission vs wavelength plot for three different radii (R = 0.25a, 0.3a, and 0.35a) and for five different refractive indices (n = 1,1.33,1.4,1.5,1.6). 
    The graphs are given below,
    \\
    From these graphs, we have noted the points for resonance by taking into account all of the refractive indices. From the information on these points, we have plotted the wavelength vs refractive index plot.
    The graph is shown below,

    \caption{Some images}\label{fig:foobar}
\end{figure}

Final text

\end{document}