undefined control sequence \printbibliography

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Die letzten Beiträge des Themas

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Wenn du eine Datei oder mehrere Dateien anhängen möchtest, gib die Details unten ein.

Ansicht erweitern Die letzten Beiträge des Themas: undefined control sequence \printbibliography

Off-Topic: Veraltete Pakete

von Gast » So 19. Nov 2017, 18:37

Übrigens sollte man subfigure schon seit Jahrzehnten nicht mehr verwenden. Alternativen gibt es unter dem Paketlink.

von Gast » So 19. Nov 2017, 15:15

Wie gesagt, der Stil wurde für eine ältere Version von biblatex geschrieben. In der Zwischenzeit mussten leider ein paar Makros und Optionen umbenannt werden.
\def\printdateextralabel{\printlabeldateextra}
sollte dieses Problem beheben, aber es kann noch weitere geben. Ebenso kann es sein, dass einige Dinge einfach ohne Fehlermeldung nicht mehr das tun, was sie sollen.

Du solltest auf jeden Fall dem Entwickler der Vorlage bescheid geben.

Für die Zukunft wäre es hilfreich, wenn Du in Deiner Frage schon schreiben könntest, welcher Befehl nicht definiert ist und wie genau die Fehlermeldung ist, die Du bekommst. Ebenso solltest Du versuchen, Deine Beispiele etwas minimaler zu gestalten. Viele Pakete, die Du lädst haben mit der Bibliographie nichts zu tun. Titel und Anhang sowie die vielen auskommentierten Zeilen könnten ganz verschwinden.

undefined control sequence \printbibliography

von Raphau888 » So 19. Nov 2017, 13:17

Hallo,

nachdem das eine Problem gelöst scheint habe ich nun ein Problem mit der Darstellung des Literaturverzeichnisses.
Wenn ich \printbibliography anwende erscheint immer die Sequent undefined control sequence. Wenn ich es weglasse dann wird das Zitat korrekt dargestellt?

Anbei meine Files:
\documentclass[12pt, a4paper]{article} % Dokumentenklasse

\usepackage[utf8]{inputenc} % Zeichensatz und Schrift
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[english]{babel}

\usepackage[left=2.50cm, right=2.50cm, top=2.50cm, bottom=2.00cm]{geometry} % Seitenformat

\usepackage{amsmath} % Mathematikzeichen
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{mathtools}

\usepackage{booktabs} % Tabellen
\usepackage{array}
\usepackage{dcolumn}
\usepackage{tabularx}
\usepackage{threeparttable}

\usepackage{graphicx} % Grafiken
\usepackage{subfigure}

\usepackage{caption} % Paket für Tabellen- und Bildbeschriftungen

\usepackage{csquotes}
\usepackage{setspace} % Zeilenabstand
\onehalfspacing


%% Literaturverzeichnis und Zitation % %

\usepackage[%
citestyle=authoryear-comp,%
bibstyle=seminar-ae,%
maxbibnames=99,% %maximum number of names printed in bibliography before truncation with ``et al.'' is used
maxcitenames=2,
datezeros=false,% no leading 0 if dates are printed
date=long,%
isbn=false,% show no ISBNs
natbib=true,% enable natbib-compatibility
url=false,% show no urls
backend=biber % use Biber here
]{biblatex}

\setlength\bibitemsep{1.5\itemsep}


% vermeidet Witwen und Waisen

\clubpenalty10000 
\widowpenalty10000
\displaywidowpenalty=10000 



% Hier .bib-Datei einfügen

\addbibresource{bibly.bib}

%---------------------------------------------------------------------------------------
%
%								HIER BEGINNT DAS DOKUMENT
%
%---------------------------------------------------------------------------------------


\begin{document}

% TITELSEITE

\begin{titlepage}
\begin{center}
\Large
Technische Universität Dortmund\\
\large
Wirtschafts- und Sozialwissenschaftliche Fakultät
\vfill{
%\\\vspace{2cm}
Seminar zu Applied Economics:\\\vspace{0.5cm}
,,Topics in Empirical Macroeconomics``\\\vspace{0.5cm}
im Wintersemester 2015/2016% \vspace{2cm}
}
\vfill{
\LARGE
% -------------------------------------------------------------------------------------
% Ihr Thema
The costs of deflations: a historical perspective
% -------------------------------------------------------------------------------------
\\ 
\vspace{0.5cm}
\normalsize
% -------------------------------------------------------------------------------------
% Nummer Ihres Themas
(Thema 1)
% -------------------------------------------------------------------------------------
}
\end{center}

\vfill{
\normalsize
% -------------------------------------------------------------------------------------
% Ihre pers\"{o}nliche Daten
\noindent Max Mustermann \\
Matr.-Nr. 00000 \\
max.mustermann@tu-dortmund.de}
% -------------------------------------------------------------------------------------
\end{titlepage}
\newpage

% VERZEICHNISSE

\pagenumbering{Roman}
\tableofcontents
% \listoffigures
% \listoftables
\newpage
\pagenumbering{arabic}


% ================================================================================
% 									Hauptteil
% ================================================================================


%\section{Einleitung}
\section{Einleitung}


%\section{Hauptteil}
\newpage
\section{Hauptteil}
\subsection{The costs of deflations: a historical perspective}
\citet{Orph}

\subsubsection{Zusammenhang zwischen Deflation und Output Wachstum}  


    
%\section{Fazit}




% ================================================================================
% 							Literaturverzeichnis
% ================================================================================

\newpage
\printbibliography


% ================================================================================
% 								Appendix
% ================================================================================

%\appendix
%\section{Anhang}




\end{document}
Hier die Bibliotheksdate mit nur einem Eintrag:
% ====================================================================================================
%									JOURNAL-ARTIKEL
% ====================================================================================================

@Article{Orph,
  Title                    = {Monetary Policy Rules Based on Real-Time Data},
  Author                   = {Athanasios Orphanides},
  Journal                  = {American Economic Review},
  Year                     = {2001},
  Number                   = {},
  Pages                    = {964-985},
  Volume                   = {}
}

Und zur Vollständigkeit noch die Einstellungen für die Bib:
\ProvidesFile{authoryear.bbx}
[\abx@bbxid]

\RequireBibliographyStyle{standard}

\DefineBibliographyStrings{ngerman}{
   andothers = {{et\;al\adddot}},            
}


\DeclareBibliographyOption{dashed}[true]{%
  \ifstrequal{#1}{true}
    {\ExecuteBibliographyOptions{pagetracker}%
     \renewbibmacro*{bbx:savehash}{\savefield{fullhash}{\bbx@lasthash}}}
    {\renewbibmacro*{bbx:savehash}{}}}

\DeclareBibliographyOption{mergedate}[true]{%
  \ifcsdef{bbx@opt@mergedate@#1}
    {\csuse{bbx@opt@mergedate@#1}}
    {\PackageError{biblatex}
       {Invalid option 'mergedate=#1'}
       {Valid values are 'maximum', 'compact', 'basic', 'minimum',\MessageBreak
        'true' (=compact), and 'false'.}}}

\providebibmacro*{date+extrayear}{}

\def\bbx@opt@mergedate@true{\bbx@opt@mergedate@compact}

% merge date/issue with date label
\def\bbx@opt@mergedate@maximum{%
  \renewbibmacro*{date+extrayear}{%
    \iffieldundef{\thefield{datelabelsource}year}
      {}
      {\printtext[parens]{%
         \printfield{issue}%
         \setunit*{\addspace}%
         \iffieldsequal{year}{\thefield{datelabelsource}year}
           {\printdateextralabel}%
           {\printfield{labelyear}%
            \printfield{extrayear}}}}}%
  \renewbibmacro*{date}{}%
  \renewbibmacro*{issue+date}{}}

% merge date with date label
\def\bbx@opt@mergedate@compact{%
  \renewbibmacro*{date+extrayear}{%
    \iffieldundef{\thefield{datelabelsource}year}
      {}
      {\printtext[parens]{%
         \iffieldsequal{year}{\thefield{datelabelsource}year}
           {\printdateextralabel}%
           {\printfield{labelyear}%
            \printfield{extrayear}}}}}%
  \renewbibmacro*{date}{}%
  \renewbibmacro*{issue+date}{%
    \iffieldundef{issue}
      {}
      {\printtext[parens]{\printfield{issue}}}%
    \newunit}}

% merge year-only date with date label
\def\bbx@opt@mergedate@basic{%
  \renewbibmacro*{date+extrayear}{%
    \iffieldundef{\thefield{datelabelsource}year}
      {}
      {\printtext[parens]{%
         \printfield{\thefield{datelabelsource}year}%
         \printfield{extrayear}}}}%
  \renewbibmacro*{date}{%
    \iffieldundef{month}
      {}
      {\printdate}}%
  \renewbibmacro*{issue+date}{%
    \ifboolexpr{
      test {\iffieldundef{issue}}
      and
      test {\iffieldundef{month}}
    }
      {}
      {\printtext[parens]{%
         \printfield{issue}%
         \setunit*{\addspace}%
         \printdate}}%
    \newunit}}

% merge year-only date with year-only date label
\def\bbx@opt@mergedate@minimum{%
  \renewbibmacro*{date+extrayear}{%
    \iffieldundef{\thefield{datelabelsource}year}
      {}
      {\printtext[parens]{%
         \printfield{\thefield{datelabelsource}year}%
         \printfield{extrayear}}}}%
  \renewbibmacro*{date}{%
    \ifboolexpr{
      test {\iffieldundef{month}}
      and
      test {\iffieldundef{extrayear}}
    }
      {}
      {\printdate}}%
  \renewbibmacro*{issue+date}{%
    \ifboolexpr{
      test {\iffieldundef{issue}}
      and
      test {\iffieldundef{month}}
      and
      test {\iffieldundef{extrayear}}
    }
      {}
      {\printtext[parens]{%
         \printfield{issue}%
         \setunit*{\addspace}%
         \printdate}}%
    \newunit}}

% don't merge date/issue with date label
\def\bbx@opt@mergedate@false{%
  \renewbibmacro*{date+extrayear}{%
    \iffieldundef{\thefield{datelabelsource}year}
      {}
      {\printtext[parens]{%
         \printfield{\thefield{datelabelsource}year}%
         \printfield{extrayear}}}}%
  \renewbibmacro*{date}{\printdate}%
  \renewbibmacro*{issue+date}{%
    \printtext[parens]{%
      \printfield{issue}%
      \setunit*{\addspace}%
      \printdate}%
    \newunit}}

% n.b. the default datelabel=year overrides merging of months and days
\ExecuteBibliographyOptions{labeldateparts,sorting=nyt,pagetracker,mergedate}

\DeclareFieldFormat{shorthandwidth}{#1}
\setlength{\bibitemsep}{0pt}

\DeclareNameAlias{author}{sortname}
\DeclareNameAlias{editor}{sortname}
\DeclareNameAlias{translator}{sortname}

\defbibenvironment{bibliography}
  {\list
     {}
     {\setlength{\leftmargin}{\bibhang}%
      \setlength{\itemindent}{-\leftmargin}%
      \setlength{\itemsep}{\bibitemsep}%
      \setlength{\parsep}{\bibparsep}}}
  {\endlist}
  {\item}

\defbibenvironment{shorthand}
  {\list
     {\printfield[shorthandwidth]{shorthand}}
     {\setlength{\labelwidth}{\shorthandwidth}%
      \setlength{\leftmargin}{\labelwidth}%
      \setlength{\labelsep}{\biblabelsep}%
      \addtolength{\leftmargin}{\labelsep}%
      \setlength{\itemsep}{\bibitemsep}%
      \setlength{\parsep}{\bibparsep}%
      \renewcommand*{\makelabel}[1]{##1\hss}}}
  {\endlist}
  {\item}

\InitializeBibliographyStyle{\global\undef\bbx@lasthash}

\newbibmacro*{bbx:savehash}{%
  \savefield{fullhash}{\bbx@lasthash}}

\newbool{bbx@inset}
\DeclareBibliographyDriver{set}{%
  \booltrue{bbx@inset}%
  \entryset{}{}%
  \newunit\newblock
  \usebibmacro{setpageref}%
  \finentry}

\renewbibmacro*{begrelated}{%
  \booltrue{bbx@inset}}

\renewbibmacro*{endrelated}{%
  \usebibmacro*{bbx:savehash}}

\renewbibmacro*{author}{%
  \ifboolexpr{
    test \ifuseauthor
    and
    not test {\ifnameundef{author}}
  }
    {\usebibmacro{bbx:dashcheck}
       {\bibnamedash}
       {\usebibmacro{bbx:savehash}%
        \printnames{author}%
        \iffieldundef{authortype}
          {\setunit{\addspace}}
          {\setunit{\addcomma\space}}}%
     \iffieldundef{authortype}
       {}
       {\usebibmacro{authorstrg}%
        \setunit{\addspace}}}%
    {\global\undef\bbx@lasthash
     \usebibmacro{labeltitle}%
     \setunit*{\addspace}}%
  \usebibmacro{date+extrayear}}

\renewbibmacro*{editor}{%
  \usebibmacro{bbx:editor}{editorstrg}}
\renewbibmacro*{editor+others}{%
  \usebibmacro{bbx:editor}{editor+othersstrg}}
\newbibmacro*{bbx:editor}[1]{%
  \ifboolexpr{
    test \ifuseeditor
    and
    not test {\ifnameundef{editor}}
  }
    {\usebibmacro{bbx:dashcheck}
       {\bibnamedash}
       {\printnames{editor}%
        \setunit{\addcomma\space}%
        \usebibmacro{bbx:savehash}}%
     \usebibmacro{#1}%
     \clearname{editor}%
     \setunit{\addspace}}%
    {\global\undef\bbx@lasthash
     \usebibmacro{labeltitle}%
     \setunit*{\addspace}}%
  \usebibmacro{date+extrayear}}

\renewbibmacro*{translator}{%
  \usebibmacro{bbx:translator}{translatorstrg}}
\renewbibmacro*{translator+others}{%
  \usebibmacro{bbx:translator}{translator+othersstrg}}
\newbibmacro*{bbx:translator}[1]{%
  \ifboolexpr{
    test \ifusetranslator
    and
    not test {\ifnameundef{translator}}
  }
    {\usebibmacro{bbx:dashcheck}
       {\bibnamedash}
       {\printnames{translator}%
        \setunit{\addcomma\space}%
        \usebibmacro{bbx:savehash}}%
     \usebibmacro{translator+othersstrg}%
     \clearname{translator}%
     \setunit{\addspace}}%
    {\global\undef\bbx@lasthash
     \usebibmacro{labeltitle}%
     \setunit*{\addspace}}%
  \usebibmacro{date+extrayear}}

\newbibmacro*{bbx:dashcheck}[2]{%
  \ifboolexpr{
    test {\iffieldequals{fullhash}{\bbx@lasthash}}
    and
    not test \iffirstonpage
    and
    (
       not bool {bbx@inset}
       or
       test {\iffieldequalstr{entrysetcount}{1}}
    )
  }
    {#1}
    {#2}}

\newbibmacro*{labeltitle}{%
  \iffieldundef{label}
    {\iffieldundef{shorttitle}
       {\printfield{title}%
        \clearfield{title}}
       {\printfield[title]{shorttitle}}}
    {\printfield{label}}}


\renewbibmacro*{journal+issuetitle}{%
  \usebibmacro{journal}%
  \setunit*{\addspace}%
  \iffieldundef{series}
    {}
    {\newunit
     \printfield{series}%
     \setunit{\addspace}}%
  \printfield{volume}%
  \newunit}
  

\DeclareFieldFormat{journaltitle}{#1}



\DeclareFieldFormat[article,report,incollection,book,online]{title}{#1}

\DeclareFieldFormat{booktitle}{#1}

\renewcommand{\labelnamepunct}{, }

%\renewcommand*{\revsdnamedelim}{,\addspace}

\AtBeginBibliography{%
\renewcommand*{\finalnamedelim}{,\addspace\bibstring{and}\addspace}
}

%\AtBeginBibliography{%
% \renewcommand*{\finalnamedelim}{%
% \ifnumgreater{\value{liststop}}{1}{\finalandcomma}{}%
% \addspace\bibstring{and}\space}%
%}


\DeclareBibliographyDriver{report}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \setunit{\addcomma\space}\newblock
  \printfield{type}%
  \setunit*{\addspace}%
  \printfield{number}%
  \newunit\newblock
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{institution+location+date}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \printfield{pagetotal}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isrn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}
  
  
\DeclareBibliographyDriver{article}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/translator+others}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{bytranslator+others}%
  \newunit\newblock
  \printfield{version}%
  \setunit{\labelnamepunct}\newblock
  %\newunit\newblock
  \usebibmacro{journal+issuetitle}%
  \newunit
  \usebibmacro{byeditor+others}%
  \newunit
  \usebibmacro{note+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{issn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}  
  
  
\DeclareBibliographyDriver{book}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/editor+others/translator+others}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{maintitle+title}%
  %\newunit
  \setunit{\labelnamepunct}\newblock
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \printfield{edition}%
  \newunit
  \iffieldundef{maintitle}
    {\printfield{volume}%
     \printfield{part}}
    {}%
  \newunit
  \printfield{volumes}%
  \newunit\newblock
  \usebibmacro{series+number}%
  \newunit\newblock
  \printfield{note}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{publisher+location+date}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \printfield{pagetotal}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}  
  
  

%\renewbibmacro*{byeditor}{%
%  \ifnameundef{editor}
%    {}
%    {\usebibmacro{bytypestrg}{editor}{editor}%
%     \setunit{\addspace}%
%     \printnames[byeditor]{editor}%
%     \newunit}%
%  \usebibmacro{byeditorx}}
  

\renewbibmacro*{byeditor}{%
    %\usebibmacro{bytypestrg}{editor}{editor}%
    %\setunit{\addspace}%
	\printnames[byeditor]{editor}
	\printtext{\ifnumgreater{\value{editor}}{1}{(\bibstring{editors})}{}%
	\ifnumless{\value{editor}}{2}{(\bibstring{editor})}{}}\usebibmacro{byeditorx}}    
	
	
%\renewbibmacro*{byeditor}{%
%    %\usebibmacro{bytypestrg}{editor}{editor}%
%    %\setunit{\addspace}%
%	\printnames[byeditor]{editor}
%	\printtext{(\bibstring{editors})}}  	
  

%\newbibmacro*{bytypestrg}[2]{%
%  \iffieldundef{#1type}
%    {\bibstring{by#2}}
%    {\ifbibxstring{by\thefield{#1type}}
%       {\bibstring{by\thefield{#1type}}}
%       {\printtext{\thefield{#1type}}}}}
         
  
  
\DeclareBibliographyDriver{incollection}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/translator+others}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  %\newunit
  \setunit{\labelnamepunct}\newblock
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{in:}%
  %\usebibmacro{maintitle+booktitle}%
  %\setunit{\labelnamepunct}\newblock
  %\newunit\newblock
  %\usebibmacro{byeditor+others}%
  \usebibmacro{byeditor}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{series+number}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \printfield{edition}%
  %\newunit
  \setunit{\labelnamepunct}\newblock
  \iffieldundef{maintitle}
    {\printfield{volume}}%
  %   \printfield{part}}
    {}%
  %\newunit
  \setunit{\labelnamepunct}\newblock
  \printfield{volumes}%
  \newunit\newblock
  \printfield{note}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \printfield{pages}%
  %\usebibmacro{chapter+pages}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{publisher+location+date}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}} 
  
  
\DeclareBibliographyDriver{online}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/editor+others/translator+others}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit\newblock
  \usebibmacro{date}%
  \newunit\newblock
  \iftoggle{bbx:eprint}
    {\usebibmacro{eprint}}
    {}%
  %\newunit\newblock
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{url+urldate}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}     
  

\DeclareFieldFormat{urldate}{[\bibstring{urlseen}\space#1]}

\DefineBibliographyStrings{german}{%
  urlseen = {letzter Zugriff:},
}

\DefineBibliographyStrings{english}{%
  urlseen = {last access:},
}
  

\endinput
Wäre super wenn wer wüsste wodran es liegen könnte!

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