Alan Munn

Given that running `biber` is relatively time consuming the ability to generate completely readable output without running `biber` is quite useful to me, at least, because my `.bib` file keys...

@hvoss49 But that doesn't really help, the issue is that any time you add a new citation to the source and compile (without running `biber`) you get `empty citation` added...

A simple solution might be to make the text of `empty citation` that is added in #1216 be user definable (or simply make it `?`). That would require no changes...

I've just encountered a version of this error on an older Macbook Air that I don't have much installed on. With an up-to-date TeX Live, and MacOS 11.7.4 (the latest...

Thanks, Bruno. Indeed it was exactly the latter. I had an old incompatible version of XCode installed. Updating to 13.2.1 (thanks for that info!) solved the problem.