Graphics not centering

Question

I am trying to center graphics in TexShop. This is the code that I am using but the graphics are not getting centering whatever I try to do.

 \begin{figure}[H]
    \centering
    \includegraphics[height = 2.3in]{/Users/LOCATION/Matrix1.png}   
    \caption{Generated Matrix}
\end{figure}

The code is giving me this image

I tried using

\begin{center}
...
end{center}

instead of \centering but nothing seems to be fixing the problem.

EDIT 1 : Full Code

\documentclass[11pt]{article}
\usepackage{graphicx}
\usepackage{amsmath}
\begin{document}
 \begin{figure}[H]
     \centering
    \caption{Generated Matrix}  
    \includegraphics[height = 2.3in] {/Users/Max/Desktop/Math IA/PhysicsDrawings/Matrix1.png}
\end{figure}
\end{document}