Package pdftex.def Error: File `images/p1-eps-converted-to.pdf' not found

Question

I am using a Mac Machine with the following LaTeX Softwares:

• MacTEX: as the main LaTeX kernel

• TexStudio: as the LaTeX editor http://texstudio.sourceforge.net/

In part of the document I have created, I try to import a vector graphic image in *.eps format:

\begin{figure}
    \begin{center}
       \begin{tabular}{cc}
        \includegraphics[width=0.450\linewidth]{images/p1}& 
        \includegraphics[width=0.450\linewidth]{images/p2}\\ 
        (a)OLS & (b)RR 
    \end{tabular}
  \end{center}
\end{figure}

p1 and p2are p1.eps and p2.eps images.I include the following packages as well on top of the code:

\usepackage{graphicx}
\usepackage{epstopdf}

After this, I am getting a stupid error with regard to eps to pdf conversion.

! Package pdftex.def Error: File `images/p1-eps-converted-to.pdf' not found.
! Package pdftex.def Error: File `images/p2-eps-converted-to.pdf' not found.

I have tried several options but still cannot see the images in my machine. What can I do to overcome the issue please?