Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("^#" nil)
  (while (string-match "^#" (car content-lines)) (insert (pop content-lines) "\n"))
  (progn (while (string-match "^#" ...) (insert ... "\n")))
  (if content-lines (progn (while ... ...)))
  (when content-lines (while (string-match "^#" ...) (insert ... "\n")))
  (progn (when (plist-get params :hlines) (setq tmp nil) (while tbl ...) (setq tbl ...)) (when vlines (setq tbl ...) (setq tbl ...)) (setq pos (point)) (when content-lines (while ... ...)) (insert (org-listtable-to-string tbl)) (when (plist-get params :width) (insert "\n|" ...)) (while (setq line ...) (when ... ... ...)) (if recalc (progn ... ...) (goto-char pos) (org-table-align)))
  (if tbl (progn (when ... ... ... ...) (when vlines ... ...) (setq pos ...) (when content-lines ...) (insert ...) (when ... ...) (while ... ...) (if recalc ... ... ...)))
  (when tbl (when (plist-get params :hlines) (setq tmp nil) (while tbl ...) (setq tbl ...)) (when vlines (setq tbl ...) (setq tbl ...)) (setq pos (point)) (when content-lines (while ... ...)) (insert (org-listtable-to-string tbl)) (when (plist-get params :width) (insert "\n|" ...)) (while (setq line ...) (when ... ... ...)) (if recalc (progn ... ...) (goto-char pos) (org-table-align)))
  (let ((pos ...) (hlines ...) (vlines ...) (maxlevel ...) (content-lines ...) (skip-empty-rows ...) tbl id idpos nfields tmp recalc line id-as-string view-file view-pos) (when (setq id ...) (setq id-as-string ...) (cond ... ... ... ... ... ... ...)) (with-current-buffer (if view-file ... ...) (save-excursion ...)) (goto-char pos) (move-marker pos nil) (when tbl (when ... ... ... ...) (when vlines ... ...) (setq pos ...) (when content-lines ...) (insert ...) (when ... ...) (while ... ...) (if recalc ... ... ...)))
  org-dblock-write:columnview((:name "columnview" :maxlevel 3 :id 114233DF-D019-449E-892C :indentation-column 0 :content #("#+TBLFM: $2 = ceil($3 / 8)\n" 0 26 (fontified t font-lock-fontified t face org-meta-line) 26 27 (fontified t font-lock-fontified t face org-meta-line))))
  funcall(org-dblock-write:columnview (:name "columnview" :maxlevel 3 :id 114233DF-D019-449E-892C :indentation-column 0 :content #("#+TBLFM: $2 = ceil($3 / 8)\n" 0 26 (fontified t font-lock-fontified t face org-meta-line) 26 27 (fontified t font-lock-fontified t face org-meta-line))))
  (let* ((pos ...) (line ...) (params ...) (name ...) (indent ...) (cmd ...)) (message "Updating dynamic block `%s' at line %d..." name line) (funcall cmd params) (message "Updating dynamic block `%s' at line %d...done" name line) (goto-char pos) (when (and indent ...) (setq indent ...) (save-excursion ... ... ... ...)))
  (save-window-excursion (let* (... ... ... ... ... ...) (message "Updating dynamic block `%s' at line %d..." name line) (funcall cmd params) (message "Updating dynamic block `%s' at line %d...done" name line) (goto-char pos) (when ... ... ...)))
  org-update-dblock()
  (save-excursion (org-update-dblock))
  (cond ((or ... org-occur-highlights org-latex-fragment-image-overlays) (and ... ...) (org-remove-occur-highlights) (org-remove-latex-fragment-image-overlays) (message "Temporary highlights/overlays removed from current buffer")) ((and ... ...) (funcall org-finish-function)) ((run-hook-with-args-until-success ...)) ((org-in-regexp org-ts-regexp-both) (org-timestamp-change 0 ...)) ((or ... ...) (call-interactively ...)) ((org-on-target-p) (call-interactively ...)) ((and ... ...) (call-interactively ...)) ((org-on-heading-p) (call-interactively ...)) ((org-at-table\.el-p) (message "Use C-c ' to edit table.el tables")) ((org-at-table-p) (org-table-maybe-eval-formula) (if arg ... ...) (call-interactively ...) (orgtbl-send-table ...)) ((or ... ...) (call-interactively ...)) ((org-at-item-checkbox-p) (let* ... ... ... ... ... ... ... ... ...)) ((org-at-item-p) (let* ... ... ... ... ...)) ((save-excursion ... ...) (beginning-of-line 1) (save-excursion ...)) ((save-excursion ... ...) (cond ... ...)) ((org-clock-update-time-maybe)) (t (or ... ...)))
  (let ((org-enable-table-editor t)) (cond (... ... ... ... ...) (... ...) (...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ... ... ... ...) (... ...) (... ...) (... ...) (... ... ...) (... ...) (...) (t ...)))
  org-ctrl-c-ctrl-c(nil)
  call-interactively(org-ctrl-c-ctrl-c nil nil)