Ciao, in emacs 28 (master branch, commit 32c6732d16385f242b1109517f25e9aefd6caa5c) define-obsolete-function-alias has "when" parameter mandatory. The line 376 of org-refile.el raise an error: "Wrong number of arguments: (3 . 4), 2"
lisp/org-refile.el 376:(define-obsolete-function-alias 'org-copy 'org-refile-copy) Regards, Vincenzo