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I am using a self-hosted instance of Overleaf/ShareLaTeX, and I cannot get BibLaTeX to work. My preamble looks like this:

\documentclass{report}
\usepackage[utf8]{inputenc}
\usepackage[margin=1in]{geometry}
\usepackage{subfiles,fancyhdr,amsmath,amssymb}
\usepackage[style=ieee,refsegment=chapter]{biblatex}
\usepackage[breaklinks]{hyperref}
\usepackage[hang,flushmargin]{footmisc}
\usepackage{myMacros} % A quick package that I made to hold some macros

\addbibresource{references.bib}

I am using the Overleaf default compiller, pdfLaTeX. I know that Overleaf provides automatic support for BibLaTeX, as I have seen articles about using it on their website (for example, this one).

The problem, I think, is that \addbibresource{references.bib} is not doing anything at all. I tried changing it to things like \addbibresource{referencesloremipsum.bib} and \addbibresource{references.asdfbib}, and I did not get any error messages saying that those files did not exist.

I have spent a while trying this with and without Biber installed (via tlmgr install biber), etc, and nothing works. I believe that using the BibTeX fallback may have worked (I am not sure), but I don't want to do that.

In case it helps, I am using subfiles.

Here are the compilation logs. As you can see, there is no mention of references.bib at all:

This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex 2021.7.2)  25 JUN 2022 01:39
entering extended mode
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Package biblatex Info: Trying to load biblatex default data model...
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Package biblatex Info: Trying to load compatibility code...
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6
  • You posted the pdflatex log. It's not pdflatex that needs to read the .bib file: all pdflatex does is write the name of that file (and the citation keys) to the .bcf file, so that when biber processes it, it knows where to look. It's biber that needs to read the .bib file to create a .bbl file. Biber should be generating its own log (ending in .blg): what does it say?
    – frabjous
    Jun 25, 2022 at 2:29
  • 1
    Try a simple example document like gist.github.com/moewew/e92edad4f3b96d3ed9ef0308d61a6945 first: No frills like subfiles. That document can be run on any system with biblatex and Biber installed. The .bib file that is used will be present on such a system and found automatically. Normally Overleaf uses latexmk to run pdfLaTeX and Biber automatically, so you should get both a .log and .blg file: Check both of them for errors and warnings.
    – moewe
    Jun 25, 2022 at 6:40
  • I don't have a .blg file, but here is my output.bcf file. Overleaf gives me the option to download the following files: aux file, bcf file, log file, out file, pdf file, run.xml file, stdout file, synctex.gz file, and toc file. Jun 25, 2022 at 13:45
  • The .bcf does not help here. If you have no .blg, then the most likely explanation is that Biber was not run at all. On Overleaf's own system, they always run latexmk which will run Biber (at least for the example I posted above). But maybe you have to configure something to that effect on your own instance or something else is wrong. But I'm guessing this is something to ask Overleaf support.
    – moewe
    Jun 25, 2022 at 15:44
  • 1
    I have opened an issue in the Overleaf GitHub repository. Please see overleaf/overleaf#1030. Jun 26, 2022 at 0:38

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