LaTeX forum ⇒ BibTeX, biblatex and biber ⇒ Biber as backend in MastersDoctoralThesis Template in Overleaf does not work

[bachelorstudent]

Hello,

I am trying to do my bibliography in APA style in the MastersDoctoralThesis Template of Overleaf.
Unfortunately, only this code works:

Code: [Select all] [Expand/Collapse] [Download] ({untitled.tex})

\usepackage[backend=bibtex,style=authoryear]{biblatex}
\addbibresource{example.bib, Mendeley.bib}

and when I try this code it does not work:

Code: [Select all] [Expand/Collapse] [Download] ({untitled.tex})

\usepackage[backend=bibter,style=apa]{biblatex}
\addbibresource{example.bib, Mendeley.bib}

I get this error message when I try to use biber as backend and apa as style:

Code: [Select all] [Expand/Collapse] [Download] ({untitled.tex})

./main.tex:
LaTeX Warning: Unused global option(s):
[onehalfspacingheadsepline].
(no line number):
[0] Config.pm:343> INFO - This is Biber 2.5
[0] Config.pm:346> INFO - Logfile is 'main.blg'
[143] biber:290> INFO - === Sat Sep 29, 2018, 11:14:58
[417] Biber.pm:352> INFO - Reading 'main.bcf'
[756] Biber.pm:777> INFO - Found 107 citekeys in bib section 0
[780] Biber.pm:3494> INFO - Processing section 0
[802] Biber.pm:3658> INFO - Looking for bibtex format file 'example.bib, Mendeley.bib' for section 0
[918] Utils.pm:165> ERROR - Cannot find 'example.bib, Mendeley.bib'!
[919] Biber.pm:113> INFO - ERRORS: 1
./Chapters/Chapter1.tex:5:
LaTeX Warning: Citation 'ANSI2013' on page 1 undefined on input line 5.
 
LaTeX Warning: Citation 'hargreaves2002musical' on page 1 undefined on input li
ne 5.
 
LaTeX Warning: Citation 'li2003comparative' on page 1 undefined on input line 5
.
./Chapters/Chapter1.tex:9:
LaTeX Warning: Citation 'Shepard1962TheI.' on page 1 undefined on input line 9.
 
LaTeX Warning: Citation 'tversky1977features' on page 1 undefined on input line
9.
 
LaTeX Warning: Citation 'gentner1997structure' on page 1 undefined on input lin
e 9.
 
LaTeX Warning: Citation 'Kriegeskorte2012InverseArrangements' on page 1 undefin
ed on input line 9.
./Chapters/Chapter1.tex:10:
LaTeX Warning: Citation 'Kriegeskorte2008RepresentationalNeuroscience' on page
1 undefined on input line 10.
./Chapters/Chapter1.tex:12:
LaTeX Warning: Citation 'hargreaves2002musical' on page 1 undefined on input li
ne 12.

Can anyone help me with this?
That would be really great.

[Johannes_B]

The unused global option issue is not related to the bibliography. There is a comma missing. It should be onehalfspacing,headsepline.

To get the bibliography working, use : \addbibresource{Mendeley.bib}.

You should give your bibliography a better name though. Please have a look at https://en.wikibooks.org/wiki/LaTeX/Bib ... _and_biber

[bachelorstudent]

I changed what you have commented but I still have problems running biber in that template because I think in overleaf everything is done automatically so that I don't have to do something further besides changing from backend=bibtex to backend=biber. Do you think that this is related to the Template "MastersDoctoralThesis" in overleaf?

\usepackage[backend=biber,style=apa]{biblatex} % Use the bibtex backend with the authoryear citation style (which resembles APA)

\addbibresource{example.bib} % The filename of the bibliography

[Johannes_B]

\DeclareLanguageMapping{english}{english-apa}

[bachelorstudent]

I tried this \DeclareLanguageMapping{english}{english-apa} already some days ago but it did not work either.

So, I think the problem was that I run the template in v1 because when I open a MastersDoctoralThesis template in v2 backend=biber and style=apa works without problems!!

[bachelorstudent]

Tried \DeclareLanguageMapping{english}{english-apa} again in a v1 project and it worked as well.

That is really cool.

Thank you so much for your help.
Everybody who has got the same problem:
Write

Code: [Select all] [Expand/Collapse] [Download] ({untitled.tex})

\usepackage[backend=biber,style=apa]{biblatex} 
\addbibresource{example.bib}
\usepackage[autostyle=true]{csquotes} 
\DeclareLanguageMapping{english}{english-apa}

into the MastersDoctoralThesis preamble. The preamble is before the command \begin{document}.