Inserting a SVG into a LaTeX document

I would like to add a logo into my Latex document. Since using \includesvg did not work for me (I am using ubuntu and I have installed incscape) I resorted to manually converting the svg file into a pdf file.

But when I wanted to include this file in my Title (see 01_titel.tex) it print a bunch of character-errors. Does anybody know how to fix this and include the logo as a vector-graphic ?

You can find the tex file and the pdf / svg I want to include here: Here

Error when compiling the file

The easiest way would be to somehow include the svg directly into the tex file.

Here is my Tex File:

%Dokumentklasse
\documentclass[a4paper,12pt]{scrreprt}
\usepackage[left= 2.5cm,right = 2cm, bottom = 4 cm]{geometry}
%\usepackage[onehalfspacing]{setspace}
% ============= Packages =============

% Dokumentinformationen
\usepackage[
    pdftitle={Titel der Abschlussarbeit},
    pdfsubject={},
    pdfauthor={Euer Name},
    pdfkeywords={}, 
    %Links nicht einrahmen
    hidelinks
]{hyperref}


% Standard Packages
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage{graphicx, subfig}
\graphicspath{{img/}}
\usepackage{fancyhdr}
\usepackage{lmodern}
\usepackage{color}

% zusätzliche Schriftzeichen der American Mathematical Society
\usepackage{amsfonts}
\usepackage{amsmath}


%nicht einrücken nach Absatz
%\setlength{\parindent}{0pt}


% ============= Kopf- und Fußzeile =============
\pagestyle{fancy}
%
\lhead{}
\chead{}
\rhead{\slshape \leftmark}
%%
\lfoot{}
\cfoot{\thepage}
\rfoot{}
%%
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0pt}

% ============= Package Einstellungen & Sonstiges ============= 
%Besondere Trennungen
\hyphenation{De-zi-mal-tren-nung}


% ============= Dokumentbeginn =============

\begin{document}
%Seiten ohne Kopf- und Fußzeile sowie Seitenzahl
\pagestyle{empty}
\begin{figure}
\centering
\def\svgwidth{175pt}
\input{img/thws-logo.pdf}
\caption{logo}
\end{figure}

\end{document}

There's a package svg on CTAN, which adds \includesvg{<filename no ext>}, which simply loads your file similarly to \includegraphics from graphicx and accepts optional arguments like width, scale etc.

The code below should render following image

EDIT. Note the block filecontents*. This is to create a file in a root folder and is added to make example self-content. The test-svg.svg file would just be an external file copied to a project folder by you.

The code

\begin{filecontents*}[overwrite]{test-svg.svg}
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   width="60.103493mm"
   height="50.85656mm"
   viewBox="0 0 60.103493 50.85656"
   version="1.1"
   id="svg5"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:svg="http://www.w3.org/2000/svg">
  <sodipodi:namedview
     id="namedview7"
     pagecolor="#505050"
     bordercolor="#ffffff"
     borderopacity="1"
     inkscape:showpageshadow="0"
     inkscape:pageopacity="0"
     inkscape:pagecheckerboard="1"
     inkscape:deskcolor="#505050"
     inkscape:document-units="mm"
     showgrid="false" />
  <defs
     id="defs2" />
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1"
     transform="translate(-66.909471,-25.283422)">
    <rect
       style="fill:#ff0000;stroke:#000000;stroke-width:1.76389"
       id="rect111"
       width="35.796261"
       height="26.072519"
       x="67.79142"
       y="26.165365" />
    <ellipse
       style="fill:#00ffff;stroke:#000000;stroke-width:1.76389"
       id="path165"
       cx="107.6892"
       cy="57.111996"
       rx="18.44182"
       ry="18.146046" />
  </g>
</svg>
\end{filecontents*}
%%%
\documentclass{article}
\usepackage{svg}

\begin{document}
\begin{figure}[tbh]
    \centering
    \includesvg[scale=1.2]{test-svg}
    \caption{Included SVG file}\label{fig:testsvg}
\end{figure}
\end{document}