LaTeX warning explanation needed

[Herbert Voss]

Am 14.10.21 um 17:47 schrieb Rich Shepard:
> On Thu, 14 Oct 2021, Axel Dessecker wrote:
>
>> LaTeX Warning: There were undefined references.
>> Package biblatex Warning: Please (re)run Biber on the file:
>> (biblatex)                biological-evaluation
>> (biblatex)                and rerun LaTeX afterwards.
>
> In the PWD are these files:
> $ ls
> #biological-evaluation.lyx#  biological-evaluation.lyx 
> biological-evaluation.tex.dep-pdf
> biological-evaluation.aux    biological-evaluation.lyx.bbl 
> biological-evaluation.tex.log
> biological-evaluation.bcf    biological-evaluation.lyx.blg 
> biological-evaluation.toc
> biological-evaluation.lof    biological-evaluation.pdf
> biological-evaluation.log    biological-evaluation.run.xml
>
> I copied the LaTeX/pdflatex output in the /tmp/lyx_* directory.
>
> Then I ran biber on the *.lyx file:
> $ biber biological-evaluation.lyx INFO - This is Biber 2.14
> INFO - Logfile is 'biological-evaluation.lyx.blg'
> ERROR - Cannot find 'biological-evaluation.lyx.bcf'!
> INFO - ERRORS: 1
>
> but the file is present in the same directory. And it's 102032 bytes in
> size.
>
> Please suggest how I trace the error source.


You have to _export_ the LyX file tp (pdf) latex and then run
pdflatex  file.tex
biber file
pdflatex file

Herbert