I use biblatex with biber backend to cite BibTeX entries exported from Mendeley Desktop. Every time I try to render a citation with
\printbibliography or anything else, I get warnings like
LaTeX Warning: Citation 'VanDijk2018' on page 3 undefined on input line 10. ... LaTeX Warning: There were undefined references.
I'm using Overleaf. It detects all entries correctly as it suggests me autocompletion for the
\cite command. So the file structure seems ok.
I can't figure why it doesn't work then. Thank you for your help.