On 2021-10-08, lina <lina.lastname@gmail.com> wrote:
>
> *l.24 \setdoublesep {0.2 em} % 'Bond Spacing'*
>
>
I'm reading that the '\setdoublesep' macro is obsolete and has been
replaced by '\setchemfig{}'. Maybe this has something to do with the
error being thrown.
https://ctan.org/ctan-ann/id/mailman.2235.1520625403.5100.ctan-ann@ctan.org?lang=en
http://tug.ctan.org/macros/generic/chemfig/chemfig-en.pdf