I started Emacs fresh and it threw this warning.  Below is a lot of ugly
backtrace and configuration.


Warning (org-element-cache): org-element--cache: Org parser error in l2a.org::71537. Resetting.
  The error was: (search-failed "|")
  Backtrace:
"  backtrace-to-string(nil)
   (progn (backtrace-to-string (backtrace-get-frames 'backtrace)))
   (if (and (fboundp 'backtrace-get-frames) (fboundp 'backtrace-to-string)) (progn (backtrace-to-string (backtrace-get-frames 'backtrace))))
   (format \"Org parser error in %s::%S. Resetting.\\n The error ...\" (buffer-name (current-buffer)) pom err (if (and (fboundp 'backtrace-get-frames) (fboundp 'backtrace-to-string)) (progn (backtrace-to-string (backtrace-get-frames 'backtrace)))))
   (let* ((format-string (format \"Org parser error in %s::%S. Resetting.\\n The error ...\" (buffer-name (current-buffer)) pom err (if (and (fboundp 'backtrace-get-frames) (fboundp 'backtrace-to-string)) (progn (backtrace-to-string (backtrace-get-frames ...)))))) (format-string (if (or (not org-element--cache-diagnostics-ring) (not (eq 'backtrace org-element--cache-self-verify))) format-string (prog1 (concat (format \"Warning(%s): \" (buffer-name ...)) format-string \"\\nBacktrace:\\n  \" (mapconcat #'identity (ring-elements org-element--cache-diagnostics-ring) \"\\n  \")) (setq org-element--cache-diagnostics-ring nil))))) (if (and (boundp 'org-batch-test) org-batch-test) (error \"%s\" (concat \"org-element--cache: \" format-string)) (display-warning 'org-element-cache (concat \"org-element--cache: \" format-string))))
   (condition-case err (org-element--parse-to pom) (error (let* ((format-string (format \"Org parser error in %s::%S. Resetting.\\n The error ...\" (buffer-name (current-buffer)) pom err (if (and ... ...) (progn ...)))) (format-string (if (or (not org-element--cache-diagnostics-ring) (not ...)) format-string (prog1 (concat ... format-string \"\\nBacktrace:\\n  \" ...) (setq org-element--cache-diagnostics-ring nil))))) (if (and (boundp 'org-batch-test) org-batch-test) (error \"%s\" (concat \"org-element--cache: \" format-string)) (display-warning 'org-element-cache (concat \"org-element--cache: \" format-string)))) (org-element-cache-reset) (org-element--parse-to pom)))
   (if cached-only (if (and (org-element--cache-active-p) (or (not org-element--cache-sync-requests) (< pom (aref (car org-element--cache-sync-requests) 1)))) (progn (org-element--cache-find pom))) (condition-case err (org-element--parse-to pom) (error (let* ((format-string (format \"Org parser error in %s::%S. Resetting.\\n The error ...\" (buffer-name ...) pom err (if ... ...))) (format-string (if (or ... ...) format-string (prog1 ... ...)))) (if (and (boundp 'org-batch-test) org-batch-test) (error \"%s\" (concat \"org-element--cache: \" format-string)) (display-warning 'org-element-cache (concat \"org-element--cache: \" format-string)))) (org-element-cache-reset) (org-element--parse-to pom))))
   (setq element (if cached-only (if (and (org-element--cache-active-p) (or (not org-element--cache-sync-requests) (< pom (aref (car org-element--cache-sync-requests) 1)))) (progn (org-element--cache-find pom))) (condition-case err (org-element--parse-to pom) (error (let* ((format-string (format \"Org parser error in %s::%S. Resetting.\\n The error ...\" ... pom err ...)) (format-string (if ... format-string ...))) (if (and (boundp ...) org-batch-test) (error \"%s\" (concat \"org-element--cache: \" format-string)) (display-warning 'org-element-cache (concat \"org-element--cache: \" format-string)))) (org-element-cache-reset) (org-element--parse-to pom)))))
   (let (element) (if (org-element--cache-active-p) (progn (if (not org-element--cache) (org-element-cache-reset) (if cached-only nil (org-element--cache-sync (current-buffer) pom))))) (setq element (if cached-only (if (and (org-element--cache-active-p) (or (not org-element--cache-sync-requests) (< pom (aref ... 1)))) (progn (org-element--cache-find pom))) (condition-case err (org-element--parse-to pom) (error (let* ((format-string ...) (format-string ...)) (if (and ... org-batch-test) (error \"%s\" ...) (display-warning ... ...))) (org-element-cache-reset) (org-element--parse-to pom))))) (if (and (org-element--cache-active-p) element (org-element--cache-verify-element element)) (progn (setq element (org-element--parse-to pom)))) (if (eq 'org-data (org-element-type element)) nil (if (and cached-only (not (and element (or (= pom ...) (and ... ... ...) (and ... ... ...) (and ... ... ...))))) nil (if (not (eq (org-element-type element) 'section)) element (org-element-at-point (1+ pom) c
 ached-only)))))
   org-element-at-point()
   (or element (org-element-at-point))
   (let* ((pos (point)) (element (or element (org-element-at-point))) (type (org-element-type element)) (post (org-element-property :post-affiliated element))) (cond ((and post (< pos post)) (beginning-of-line) (let ((case-fold-search t)) (looking-at org-element--affiliated-re)) (cond ((not (member-ignore-case (match-string 1) org-element-parsed-keywords)) (throw 'objects-forbidden element)) ((< (match-end 0) pos) (narrow-to-region (match-end 0) (line-end-position))) ((and (match-beginning 2) (>= pos (match-beginning 2)) (< pos (match-end 2))) (narrow-to-region (match-beginning 2) (match-end 2))) (t (throw 'objects-forbidden element))) (setq type 'keyword)) ((eq type 'item) (let ((tag (org-element-property :tag element))) (if (or (not tag) (/= (line-beginning-position) post)) (throw 'objects-forbidden element) (beginning-of-line) (search-forward tag (line-end-position)) (goto-char (match-beginning 0)) (if (and (>= pos ...) (< pos ...)) (narrow-to-region (point) (match-end 0)) (throw 
 'objects-forbidden element))))) ((memq type '(headline inlinetask)) (let ((case-fold-search nil)) (goto-char (org-element-property :begin element)) (looking-at org-complex-heading-regexp) (let ((end (match-end 4))) (if (not end) (throw 'objects-forbidden element) (goto-char (match-beginning 4)) (if (looking-at org-element-comment-string) (progn ...)) (if (>= ... end) (throw ... element) (narrow-to-region ... end)))))) ((memq type '(paragraph table-row verse-block)) (let ((cbeg (org-element-property :contents-begin element)) (cend (org-element-property :contents-end element))) (if (and cbeg cend (>= pos cbeg) (or (< pos cend) (and ... ...))) (narrow-to-region cbeg cend) (throw 'objects-forbidden element)))) (t (throw 'objects-forbidden element))) (goto-char (point-min)) (let ((restriction (org-element-restriction type)) (parent element) last) (catch 'exit (while t (let ((next (org-element--object-lex restriction))) (if next (progn (org-element-put-property next :parent parent))) (if 
 (or (not next) (> ... pos)) (throw 'exit (or last parent)) (let (... ... ...) (cond ... ... ...))))))))
   (save-restriction (widen) (let* ((pos (point)) (element (or element (org-element-at-point))) (type (org-element-type element)) (post (org-element-property :post-affiliated element))) (cond ((and post (< pos post)) (beginning-of-line) (let ((case-fold-search t)) (looking-at org-element--affiliated-re)) (cond ((not (member-ignore-case ... org-element-parsed-keywords)) (throw 'objects-forbidden element)) ((< (match-end 0) pos) (narrow-to-region (match-end 0) (line-end-position))) ((and (match-beginning 2) (>= pos ...) (< pos ...)) (narrow-to-region (match-beginning 2) (match-end 2))) (t (throw 'objects-forbidden element))) (setq type 'keyword)) ((eq type 'item) (let ((tag (org-element-property :tag element))) (if (or (not tag) (/= ... post)) (throw 'objects-forbidden element) (beginning-of-line) (search-forward tag (line-end-position)) (goto-char (match-beginning 0)) (if (and ... ...) (narrow-to-region ... ...) (throw ... element))))) ((memq type '(headline inlinetask)) (let ((case-f
 old-search nil)) (goto-char (org-element-property :begin element)) (looking-at org-complex-heading-regexp) (let ((end ...)) (if (not end) (throw ... element) (goto-char ...) (if ... ...) (if ... ... ...))))) ((memq type '(paragraph table-row verse-block)) (let ((cbeg (org-element-property :contents-begin element)) (cend (org-element-property :contents-end element))) (if (and cbeg cend (>= pos cbeg) (or ... ...)) (narrow-to-region cbeg cend) (throw 'objects-forbidden element)))) (t (throw 'objects-forbidden element))) (goto-char (point-min)) (let ((restriction (org-element-restriction type)) (parent element) last) (catch 'exit (while t (let ((next ...)) (if next (progn ...)) (if (or ... ...) (throw ... ...) (let ... ...))))))))
   (save-excursion (save-restriction (widen) (let* ((pos (point)) (element (or element (org-element-at-point))) (type (org-element-type element)) (post (org-element-property :post-affiliated element))) (cond ((and post (< pos post)) (beginning-of-line) (let ((case-fold-search t)) (looking-at org-element--affiliated-re)) (cond ((not ...) (throw ... element)) ((< ... pos) (narrow-to-region ... ...)) ((and ... ... ...) (narrow-to-region ... ...)) (t (throw ... element))) (setq type 'keyword)) ((eq type 'item) (let ((tag ...)) (if (or ... ...) (throw ... element) (beginning-of-line) (search-forward tag ...) (goto-char ...) (if ... ... ...)))) ((memq type '(headline inlinetask)) (let ((case-fold-search nil)) (goto-char (org-element-property :begin element)) (looking-at org-complex-heading-regexp) (let (...) (if ... ... ... ... ...)))) ((memq type '(paragraph table-row verse-block)) (let ((cbeg ...) (cend ...)) (if (and cbeg cend ... ...) (narrow-to-region cbeg cend) (throw ... element))))
  (t (throw 'objects-forbidden element))) (goto-char (point-min)) (let ((restriction (org-element-restriction type)) (parent element) last) (catch 'exit (while t (let (...) (if next ...) (if ... ... ...))))))))
   (catch 'objects-forbidden (save-excursion (save-restriction (widen) (let* ((pos (point)) (element (or element (org-element-at-point))) (type (org-element-type element)) (post (org-element-property :post-affiliated element))) (cond ((and post (< pos post)) (beginning-of-line) (let (...) (looking-at org-element--affiliated-re)) (cond (... ...) (... ...) (... ...) (t ...)) (setq type 'keyword)) ((eq type 'item) (let (...) (if ... ... ... ... ... ...))) ((memq type '...) (let (...) (goto-char ...) (looking-at org-complex-heading-regexp) (let ... ...))) ((memq type '...) (let (... ...) (if ... ... ...))) (t (throw 'objects-forbidden element))) (goto-char (point-min)) (let ((restriction (org-element-restriction type)) (parent element) last) (catch 'exit (while t (let ... ... ...))))))))
   (progn (catch 'objects-forbidden (save-excursion (save-restriction (widen) (let* ((pos (point)) (element (or element ...)) (type (org-element-type element)) (post (org-element-property :post-affiliated element))) (cond ((and post ...) (beginning-of-line) (let ... ...) (cond ... ... ... ...) (setq type ...)) ((eq type ...) (let ... ...)) ((memq type ...) (let ... ... ... ...)) ((memq type ...) (let ... ...)) (t (throw ... element))) (goto-char (point-min)) (let ((restriction ...) (parent element) last) (catch 'exit (while t ...))))))))
   (unwind-protect (progn (catch 'objects-forbidden (save-excursion (save-restriction (widen) (let* ((pos ...) (element ...) (type ...) (post ...)) (cond (... ... ... ... ...) (... ...) (... ...) (... ...) (t ...)) (goto-char (point-min)) (let (... ... last) (catch ... ...))))))) (set-match-data saved-match-data t))
   (let ((saved-match-data (match-data))) (unwind-protect (progn (catch 'objects-forbidden (save-excursion (save-restriction (widen) (let* (... ... ... ...) (cond ... ... ... ... ...) (goto-char ...) (let ... ...)))))) (set-match-data saved-match-data t)))
   org-element-context()
   org-appear--current-elem()
   org-appear--post-cmd()
"
  Please report this to Org mode mailing list (M-x org-submit-bug-report).



Emacs  : GNU Emacs 29.0.50 (build 18, x86_64-pc-linux-gnu, GTK+ Version 3.24.20, cairo version 1.16.0)
  of 2022-11-08
Package: Org mode version 9.6-pre (release_9.5.5-1086-g7f7280 @ /usr/local/src/org-mode/lisp/)

current state:
==============
(setq
  org-link-elisp-confirm-function 'yes-or-no-p
  org-ditaa-jar-path "/usr/share/ditaa/ditaa.jar"
  org-hide-emphasis-markers t
  org-bibtex-headline-format-function '(closure
 				       (org-agenda-search-view-always-boolean org-agenda-overriding-header t)
 				       (entry)
 				       (cdr
 					(assq :title entry)
 					)
 				       )
  org-babel-after-execute-hook '(org-redisplay-inline-images)
  org-link-abbrev-alist '(("DOI" .
 			  "http://dx.doi.org/%s")
 			 ("WP" .
 			  "https://en.wikipedia.org/wiki/%s")
 			 ("YUL" .
 			  "https://www.library.yorku.ca/find/Record/%s")
 			 )
  org-persist-after-read-hook '(org-element--cache-persist-after-read)
  org-export-before-parsing-hook '(org-attach-expand-links)
  org-cycle-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
  org-archive-hook '(org-attach-archive-delete-maybe)
  org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines org-cycle-optimize-window-after-visibility-change org-cycle-display-inline-images)
  org-persist-before-read-hook '(org-element--cache-persist-before-read)
  org-image-actual-width nil
  org-mode-hook '((lambda nil
 		  (org-superstar-mode 1))
 		 wtd/org-ispell
 		 add-org-toggle-src-key
 		 org-appear-mode
 		 turn-on-flyspell
 		 (lambda nil
 		  (setq
 		   prettify-symbols-alist
 		   (cons '("<=" . 8804)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons '(">=" . 8805)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons '("|>" . 9655)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+BEGIN_SRC" . 9121)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+END_SRC" . 9123)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+begin_src" . 9121)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+end_src" . 9123)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+BEGIN_QUOTE" .
 		      10077)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+END_QUOTE" . 10078)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+begin_quote" .
 		      10077)
 		    prettify-symbols-alist)
 		   )
 		  (setq
 		   prettify-symbols-alist
 		   (cons
 		    '("#+end_quote" . 10078)
 		    prettify-symbols-alist)
 		   )
 		  )
 		 add-org-close-all-drawers-key
 		 (lambda

 						nil

 						(setq ispell-parser 'tex)

 						)
 		 (lambda nil
 		  (org-toggle-inline-images))
 		 org-clock-load
 		 (closure
 		  (org--rds
 		   reftex-docstruct-symbol
 		   org--single-lines-list-is-paragraph org-element-greater-elements visual-fill-column-width org-clock-history org-agenda-current-date org-with-time org-defdecode org-def org-read-date-inactive org-ans2 org-ans1 org-columns-current-fmt-compiled org-clock-current-task org-clock-effort org-agenda-skip-function org-agenda-skip-comment-trees org-agenda-archives-mode org-end-time-was-given org-time-was-given org-log-note-extra org-log-note-purpose org-log-post-message org-last-inserted-timestamp org-last-changed-timestamp org-entry-property-inherited-from org-blocked-by-checkboxes org-state org-agenda-headline-snapshot-before-repeat org-agenda-buffer-name org-agenda-start-on-weekday org-agenda-buffer-tmp-name org-priority-regexp org-mode-abbrev-table org-mode-syntax-table org-element-use-cache org-element-cache-persistent buffer-face-mode-face org-tbl-menu org-org-menu org-struct-menu org-entities org-last-state org-id-track-globally org-clock-start-time texmathp-why remember-data-file
  org-agenda-tags-todo-honor-ignore-options calc-embedded-open-mode calc-embedded-open-formula calc-embedded-close-formula align-mode-rules-list org-emphasis-alist org-emphasis-regexp-components org-export-registered-backends org-modules org-babel-load-languages org-id-overriding-file-name org-indent-indentation-per-level org-element--timestamp-regexp org-element-cache-map-continue-from org-element-paragraph-separate org-agenda-buffer-name org-inlinetask-min-level t)
 		  nil
 		  (add-hook
 		   'change-major-mode-hook
 		   'org-fold-show-all
 		   'append 'local)
 		  )
 		 (closure
 		  (org-src-window-setup
 		   *this*
 		   org-babel-confirm-evaluate-answer-no org-babel-tangle-uncomment-comments org-src-preserve-indentation org-src-lang-modes org-edit-src-content-indentation org-babel-library-of-babel t)
 		  nil
 		  (add-hook
 		   'change-major-mode-hook
 		   #'org-babel-show-result-all 'append 'local)
 		  )
 		 org-babel-result-hide-spec
 		 org-babel-hide-all-hashes
 		 (closure
 		  (org-agenda-skip-regexp
 		   org-fold-core-style
 		   org-table1-hline-regexp
 		   org-table-tab-recognizes-table.el org-table-dataline-regexp org-table-any-border-regexp org-agenda-restriction-lock-overlay org-agenda-overriding-restriction org-agenda-diary-file org-complex-heading-regexp calendar-mode-map t)
 		  nil
 		  (setq
 		   imenu-create-index-function 'org-imenu-get-tree)
 		  )
 		 wrap-region-mode)
  org-babel-load-languages '((ditaa . t)
 			    (dot . t)
 			    (latex . t)
 			    (lilypond . t)
 			    (python . t)
 			    (R . t)
 			    (ruby . t)
 			    (shell . t)
 			    (sql . t)
 			    (sqlite . t))
  org-src-window-setup 'current-window
  org-ellipsis " ⬎"
  org-confirm-shell-link-function 'yes-or-no-p
  outline-isearch-open-invisible-function 'outline-isearch-open-invisible
  org-startup-indented t
  org-highlight-latex-and-related '(latex)
  org-use-speed-commands t
  org-agenda-before-write-hook '(org-agenda-add-entry-text)
  org-src-preserve-indentation t
  org-babel-tangle-lang-exts '(("ruby" . "rb")
 			      ("python" .
 			       "py")
 			      ("LilyPond" .
 			       "ly")
 			      ("latex" .
 			       "tex")
 			      ("emacs-lisp"
 			       . "el")
 			      ("elisp" .
 			       "el")
 			      )
  org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer)
  org-confirm-elisp-link-function 'yes-or-no-p
  org-cycle-separator-lines 0
  org-superstar-headline-bullets-list '("⊢"
 				       "ǁ"
 				       "ǀ"
 				       "⋱"
 				       "◉"
 				       "○")
  org-support-shift-select t
  org-pretty-entities t
  org-fontify-whole-heading-line t
  org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate)
  org-export-backends '(html latex md odt
 		       beamer)
  org-confirm-babel-evaluate nil
  org-fold-core-isearch-open-function 'org-fold-core--isearch-reveal
  org-clock-persist 'history
  org-persist-before-write-hook '(org-element--cache-persist-before-write)
  org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
  org-link-shell-confirm-function 'yes-or-no-p
  org-babel-pre-tangle-hook '(save-buffer)
  org-agenda-loop-over-headlines-in-active-region nil
  org-occur-hook '(org-first-headline-recenter)
  org-metadown-hook '(org-babel-pop-to-session-maybe)
  org-link-parameters '(("attachment" :follow
 			org-attach-follow
 			:complete
 			org-attach-complete-link)
 		       ("eww" :follow
 			org-eww-open :store
 			org-eww-store-link)
 		       ("rmail" :follow
 			org-rmail-open
 			:store
 			org-rmail-store-link)
 		       ("mhe" :follow
 			org-mhe-open :store
 			org-mhe-store-link)
 		       ("irc" :follow
 			org-irc-visit :store
 			org-irc-store-link
 			:export
 			org-irc-export)
 		       ("info" :follow
 			org-info-open
 			:export
 			org-info-export
 			:store
 			org-info-store-link
 			:insert-description
 			org-info-description-as-command)
 		       ("gnus" :follow
 			org-gnus-open :store
 			org-gnus-store-link)
 		       ("docview" :follow
 			org-docview-open
 			:export
 			org-docview-export
 			:store
 			org-docview-store-link)
 		       ("bibtex" :follow
 			org-bibtex-open
 			:store
 			org-bibtex-store-link)
 		       ("bbdb" :follow
 			org-bbdb-open
 			:export
 			org-bbdb-export
 			:complete
 			org-bbdb-complete-link :store org-bbdb-store-link)
 		       ("w3m" :store
 			org-w3m-store-link)
 		       ("doi" :follow
 			org-link-doi-open
 			:export
 			org-link-doi-export)
 		       ("id" :follow
 			org-id-open)
 		       ("file+sys")
 		       ("file+emacs")
 		       ("shell" :follow
 			org-link--open-shell)
 		       ("news" :follow
 			(closure
 			 ((scheme . "news"))
 			 (url arg)
 			 (browse-url
 			  (concat scheme ":"
 			   url)
 			  arg)
 			 )
 			)
 		       ("mailto" :follow
 			(closure
 			 ((scheme . "mailto")
 			  )
 			 (url arg)
 			 (browse-url
 			  (concat scheme ":"
 			   url)
 			  arg)
 			 )
 			)
 		       ("https" :follow
 			(closure
 			 ((scheme . "https"))
 			 (url arg)
 			 (browse-url
 			  (concat scheme ":"
 			   url)
 			  arg)
 			 )
 			)
 		       ("http" :follow
 			(closure
 			 ((scheme . "http"))
 			 (url arg)
 			 (browse-url
 			  (concat scheme ":"
 			   url)
 			  arg)
 			 )
 			)
 		       ("ftp" :follow
 			(closure
 			 ((scheme . "ftp"))
 			 (url arg)
 			 (browse-url
 			  (concat scheme ":"
 			   url)
 			  arg)
 			 )
 			)
 		       ("help" :follow
 			org-link--open-help
 			:store
 			org-link--store-help)
 		       ("file" :complete
 			org-link-complete-file)
 		       ("elisp" :follow
 			org-link--open-elisp)
 		       )
  org-metaup-hook '(org-babel-load-in-session-maybe)
  org-startup-with-inline-images t
  org-return-follows-link t
  org-special-ctrl-a/e t
  org-tags-column 120
  org-hide-macro-markers t
  org-footnote-section nil
  org-list-allow-alphabetical t
  )
-- 


--
William Denton
https://www.miskatonic.org/
Librarian, artist and licensed private investigator.
Toronto, Canada