Debugger entered--Lisp error: (wrong-type-argument char-or-string-p ("comm" "hypermedia"))
  insert-text-button(("comm" "hypermedia") face (:box (:line-width 2 :color "dark grey") :background "light grey" :foreground "black") follow-link t package-keyword ("comm" "hypermedia") action package-keyword-button-action)
  apply(insert-text-button ("comm" "hypermedia") face (:box (:line-width 2 :color "dark grey") :background "light grey" :foreground "black") follow-link t (package-keyword ("comm" "hypermedia") action package-keyword-button-action))
  package-make-button(("comm" "hypermedia") package-keyword ("comm" "hypermedia") action package-keyword-button-action)
  describe-package-1(debbugs)
  describe-package(debbugs)
  call-interactively(describe-package record nil)
  command-execute(describe-package record)
  execute-extended-command(nil "describe-package")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)