\documentclass{beamer}
\usetheme{poul} 
\usepackage[utf8]{inputenc}
%\graphicspath{ {images/} }
\usepackage{svg}
 
%Information to be included in the title page:
\title{Backup and (possibly) Restore}
\author{Andrea Gussoni}
\institute{P.O.u.L.}
\date{23 Marzo 2017}
%\logo{\includesvg[height=1.5cm]{images/logoblack.svg}}
 
 
\begin{document}
 
\frame{\titlepage}
 
\begin{frame}
\frametitle{Sample frame title}
This is a text in first frame. This is a text in first frame. This is a text in first frame.
\end{frame}

\begin{frame}
        \begin{figure}[htbp]
                  \centering
                    \includesvg{images/logoblack.svg}
                      \caption{svg image}
        \end{figure}
\end{frame}
 
\end{document}