I get the following stack trace when calling ORG-JIRA-GET-ISSUES from org-jira I also get it from similar calls from ejira. After looking at the code I think it's a problem in org and org-fold.
Debugger entered--Lisp error: (error "Calling ‘org-fold-core-region’ with missing SPEC") signal(error ("Calling ‘org-fold-core-region’ with missing SPEC")) error("Calling `org-fold-core-region' with missing SPEC") org-fold-region(1312 1318 t outline) org-insert-property-drawer() org-get-property-block(1222 force) org-entry-put(1286 "assignee" "Carlos Konstanski") org-jira-entry-put(1286 "assignee" "Carlos Konstanski") org-jira--render-issue(#<org-jira-sdk-issue org-jira-sdk-issue-156a386e429c>) mapc(org-jira--render-issue (#<org-jira-sdk-issue org-jira-sdk-issue-156a386e429c> ...)) org-jira--render-issues-from-issue-list((#<org-jira-sdk-issue org-jira-sdk-issue-156a386e429c> ...)) org-jira-get-issues((#<org-jira-sdk-issue org-jira-sdk-issue-156a386e429c> ...)) #f(compiled-function (&rest rest) "Callback for async, DATA is the response from the request call.\n\nWill send a list of org-jira-sdk-issue objects to the list printer." #<bytecode 0x155bd04851c94e33>)(:data (... ... ... ... ...) :symbol-status success :error-thrown nil :response #s(request-response :status-code 200 :history nil :data ... :error-thrown nil :symbol-status success :url "https://ololab..." :done-p nil :settings ... :-buffer #<killed buffer> :-raw-header "HTTP/2 200 \nda..." :-timer nil :-backend curl)) apply(#f(compiled-function (&rest rest) "Callback for async, DATA is the response from the request call.\n\nWill send a list of org-jira-sdk-issue objects to the list printer." #<bytecode 0x155bd04851c94e33>) (:data ... :symbol-status success :error-thrown nil :response ...)) request--callback(#<killed buffer> :sync nil :headers (... ...) :parser jiralib--json-read :complete #f(compiled-function (&rest rest) "Callback for async, DATA is the response from the request call.\n\nWill send a list of org-jira-sdk-issue objects to the list printer." #<bytecode 0x155bd04851c94e33>) :error (lambda ... "\n\n(fn &key DAT..." ...) :type "POST" :data ...) apply(request--callback #<killed buffer> (:sync nil :headers (("Authorization" . "Basic Y2FybG9zLmtvbnN0YW5z...") ("Content-Type" . "application/json")) :parser jiralib--json-read :complete #f(compiled-function (&rest rest) "Callback for async, DATA is the response from the request call.\n\nWill send a list of org-jira-sdk-issue objects to the list printer." #<bytecode 0x155bd04851c94e33>) :error (lambda (&rest --cl-rest--) "\n\n(fn &key DATA &allow-oth..." (apply ... ... ... --cl-rest--)) :type "POST" :data "{\"jql\":\"assignee = current..." :url "https://ololabs.atlassian...." :response #s(request-response :status-code 200 :history nil :data (... ... ... ... ...) :error-thrown nil :symbol-status success :url "https://ololabs.atlassian...." :done-p nil :settings #3 :-buffer #<killed buffer> :-raw-header "HTTP/2 200 \ndate: Sat, 27 ..." :-timer nil :-backend curl) :encoding utf-8)) request--curl-callback("https://ololabs.atlassian.net/rest/api/2/search" #<process request curl<9>> "finished\n") apply(request--curl-callback ("https://ololabs.atlassian.net/rest/api/2/search" #<process request curl<9>> "finished\n")) #f(compiled-function (&rest args2) #<bytecode -0x190ba810c79ff01c>)(#<process request curl<9>> "finished\n") I set a breakpoint at the beginning of function ORG-FOLD-CORE-GET-FOLDING-SPEC-FROM-ALIAS. It runs quite a few times successfully. Every time the input argument SPEC-OR-ALIAS has one of these values: 'ORG-FOLD-VISIBLE or 'ORG-FOLD-HIDDEN. But at some point the function runs with a value of 'DRAWER, and that's when it returns NIL and the error is thrown higher up in ORG-FOLD-CORE-REGION when it explicitly tests for a NIL result. ORG-FOLD-CORE--SPEC-SYMBOLS has the value: ((HIDDEN . ORG-FOLD-HIDDEN) (:ALIAS . ORG-FOLD-HIDDEN) (ORG-FOLD-HIDDEN . ORG-FOLD-HIDDEN) (VISIBLE . ORG-FOLD-VISIBLE) (:ALIAS . ORG-FOLD-VISIBLE) (ORG-FOLD-VISIBLE . ORG-FOLD-VISIBLE)) But when a drawer wants to be added we call ORG-FOLD-REGION like this: (ORG-FOLD-REGION (LINE-END-POSITION 0) (POINT) T (IF (EQ ORG-FOLD-CORE-STYLE 'TEXT-PROPERTIES) 'DRAWER 'OUTLINE)) It will pass in either 'DRAWER or 'OUTLINE, neither of which are valid given the alist they need to match against. It would seem that any execution path that goes through ORG-INSERT-PROPERTY-DRAWER is going to fail. I'm still unclear on how ORG-FOLD-CORE--SPEC-SYMBOLS gets set with this alist. Is there is an opportunity for callers to customize it? What would be appropriate values to add for 'DRAWER and 'OUTLINE? Emacs : GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.17.8, Xaw3d scroll bars) of 2023-05-27 Package: Org mode version 9.6.6 (release_9.6.6 @ /usr/share/emacs/30.0.50/lisp/org/) current state: ============== (setq org-link-elisp-confirm-function 'yes-or-no-p org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn ENTRY)"] 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-mode-hook '(#[0 "\300\301\302\303\304$\207" [add-hook change-major-mode-hook org-fold-show-all append local] 5] #[0 "\300\301\302\303\304$\207" [add-hook change-major-mode-hook org-babel-show-result-all append local] 5] org-babel-result-hide-spec org-babel-hide-all-hashes #[0 "\301\211\207" [imenu-create-index-function org-imenu-get-tree] 2]) org-confirm-shell-link-function 'yes-or-no-p outline-isearch-open-invisible-function 'outline-isearch-open-invisible org-agenda-before-write-hook '(org-agenda-add-entry-text) 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-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate) org-fold-core-isearch-open-function 'org-fold-core--isearch-reveal 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) ("jira" :follow org-jira-open :export nil) ("id" :follow org-id-open) ("file+sys") ("file+emacs") ("shell" :follow org-link--open-shell) ("news" :follow #[514 "\301\300\302Q\"\207" ["news" browse-url ":"] 6 "\n\n(fn URL ARG)"]) ("mailto" :follow #[514 "\301\300\302Q\"\207" ["mailto" browse-url ":"] 6 "\n\n(fn URL ARG)"]) ("https" :follow #[514 "\301\300\302Q\"\207" ["https" browse-url ":"] 6 "\n\n(fn URL ARG)"]) ("http" :follow #[514 "\301\300\302Q\"\207" ["http" browse-url ":"] 6 "\n\n(fn URL ARG)"]) ("ftp" :follow #[514 "\301\300\302Q\"\207" ["ftp" browse-url ":"] 6 "\n\n(fn 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-fold-core-style 'text-properties )