*Backtrace*.txt

Debugger entered--Lisp error: (wrong-type-argument stringp 0)
  get-buffer-create(0)
  #f(compiled-function (body &rest args) #<bytecode 0x1930268d05dc4592>)((closure (t) (n) (let* ((json-hash (save-current-buffer (set-buffer (url-retrieve-synchronously "https://openqa.opensuse.org/group_overview/1.json")) (goto-char (point-min)) (re-search-forward "^$") (delete-region (point) (point-min)) (json-parse-buffer))) (builds (gethash "build_results" json-hash)) (last-build (aref builds n))) (message "%S" last-build) (list nil (vector (gethash "version" last-build) (number-to-string (gethash "total" last-build)) (number-to-string (gethash "passed" last-build)) (number-to-string (gethash "failed" last-build)) (number-to-string (gethash "unfinished" last-build)))))) 0)
  apply(#f(compiled-function (body &rest args) #<bytecode 0x1930268d05dc4592>) (closure (t) (n) (let* ((json-hash (save-current-buffer (set-buffer (url-retrieve-synchronously "https://openqa.opensuse.org/group_overview/1.json")) (goto-char (point-min)) (re-search-forward "^$") (delete-region (point) (point-min)) (json-parse-buffer))) (builds (gethash "build_results" json-hash)) (last-build (aref builds n))) (message "%S" last-build) (list nil (vector (gethash "version" last-build) (number-to-string (gethash "total" last-build)) (number-to-string (gethash "passed" last-build)) (number-to-string (gethash "failed" last-build)) (number-to-string (gethash "unfinished" last-build)))))) 0)
  get-nth-opensuse-build(0)
  (progn (get-nth-opensuse-build 0))
  eval((progn (get-nth-opensuse-build 0)) t)
  elisp--eval-last-sexp(nil)
  eval-last-sexp(nil)
  funcall-interactively(eval-last-sexp nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)