Re: [O] How to set up anniversaries/birthdays with org-contacts-anniversaries?

[Jambunathan K]

> Debugger entered--Lisp error: (void-function diary-anniversary)

There is a universal solution to this problem

M-x load-library RET diary TAB

and choose which of the options make most sense or try each one of them
in turn.

Note that in the above load-library you are using "diary" because it is
the "prefix" of function (or variable) which reported as void.

The load-library call unvoids the void things.