Failing to load, showing this 'Symbol's function definition is void: defvar-1'

[Sharon Kimble]

I unfortunately upgraded this morning to emacs-30.0.50, and since then I can't 
get into my usual emacs of 29.0.50. 

When I'm loading emacs-29.0.50 from /usr/local/bin/ it is consistently failing 
to load saying "Symbol's function definition is void: defvar-1".

My init.el is this -
====
;;; init.el --- sharon's config -*- eval: (read-only-mode 1) -*-
;; Make sure that Git version of Org mode is being loaded instead of the 
built-in version.
(add-to-list 'load-path (expand-file-name 
"/home/boudiccas/.emacs.d/elpa/org-9.5.5"))
;;;(add-to-list 'load-path (expand-file-name 
"/home/boudiccas/.emacs.d/elpa/org-9.6"))
(add-to-list 'load-path (expand-file-name 
"/home/boudiccas/git/org-contrib/lisp"))

(require 'package)
(setq package-enable-at-startup nil)
(package-initialize)


(require 'ob-tangle)
(org-babel-load-file "/home/boudiccas/.emacs.d/config22-2.org")
====

It seems to be baulking at the last 2 lines, can somebody help please?

Thanks
   Sharon.
-- 
A taste of linux = http://www.sharons.org.uk
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Debian 11.5, fluxbox 1.3.7, emacs 29.0.5.0, Org mode 9.5.5