backtrace

Debugger entered--Lisp error: (error "*Helm Help* is not a valid window")
  signal(error ("*Helm Help* is not a valid window"))
  error("%s is not a valid window" #<buffer *Helm Help*>)
  window-normalize-window(#<buffer *Helm Help*>)
  delete-other-windows(#<buffer *Helm Help*>)
  (let ((ignore-window-parameters t)) (delete-other-windows window))
  (if window (let ((ignore-window-parameters t)) (delete-other-windows window)) nil)
  (let* ((window (and t (condition-case nil (progn (+popup/raise window)) (error nil))))) (if window (let ((ignore-window-parameters t)) (delete-other-windows window)) nil))
  +popup--delete-other-windows(#<window 6>)
  delete-other-windows()
  helm-help-internal("*Helm Help*" #f(compiled-function () #<bytecode 0x27167bd>))
  helm-help()
  funcall-interactively(helm-help)
  call-interactively(helm-help nil nil)
  command-execute(helm-help)
  read-from-minibuffer(#("Find files or url: " 0 19 (face helm-minibuffer-prompt)) "/home/tim/" (keymap (26 . helm-select-action) (tab . helm-execute-persistent-action) (2 . backward-word) (18 . evil-paste-from-register) (21 . universal-argument) (33554438 . helm-previous-page) (6 . helm-next-page) (33554443 . helm-previous-source) (33554442 . helm-next-source) (33554448 . helm-previous-source) (33554446 . helm-next-source) (right . right-char) (left . left-char) (f13 lambda nil (interactive) (helm-select-nth-action 12)) (f12 lambda nil (interactive) (helm-select-nth-action 11)) (f11 lambda nil (interactive) (helm-select-nth-action 10)) (f10 lambda nil (interactive) (helm-select-nth-action 9)) (f9 lambda nil (interactive) (helm-select-nth-action 8)) (f8 lambda nil (interactive) (helm-select-nth-action 7)) (f7 lambda nil (interactive) (helm-select-nth-action 6)) (f6 lambda nil (interactive) (helm-select-nth-action 5)) (f5 lambda nil (interactive) (helm-select-nth-action 4)) (f4 lambda nil (interactive) (helm-select-nth-action 3)) (f3 lambda nil (interactive) (helm-select-nth-action 2)) (f2 lambda nil (interactive) (helm-select-nth-action 1)) (menu-bar keymap (help-menu keymap (describe keymap (describe-mode . helm-help)))) (help keymap (109 . helm-help)) (23 . backward-kill-word) (f1 lambda nil (interactive) (helm-select-nth-action 0)) (8 keymap (109 . helm-help) (104 . undefined) (8 . undefined) (99 . helm-customize-group) (4 . helm-enable-or-switch-to-debug)) (20 . helm-toggle-resplit-and-swap-windows) (C-tab . undefined) (67108897 . helm-toggle-suspend-update) (3 keymap (57 . helm-execute-selection-action-at-nth-+9) (56 . helm-execute-selection-action-at-nth-+8) (55 . helm-execute-selection-action-at-nth-+7) (54 . helm-execute-selection-action-at-nth-+6) (53 . helm-execute-selection-action-at-nth-+5) (52 . helm-execute-selection-action-at-nth-+4) (51 . helm-execute-selection-action-at-nth-+3) (50 . helm-execute-selection-action-at-nth-+2) (49 . helm-execute-selection-action-at-nth-+1) (63 . helm-help) (110 . #f(compiled-function () (interactive nil) #<bytecode 0x1931fbd>)) (108 . helm-display-line-numbers-mode) (62 . helm-toggle-truncate-line) (21 . helm-refresh) (6 . helm-follow-mode) (9 . helm-copy-to-buffer) (11 . helm-kill-selection-and-quit) (25 . helm-yank-selection) (37 . helm-exchange-minibuffer-and-header-line) (95 . helm-toggle-full-frame) (45 . helm-swap-windows)) (67108987 . helm-enlarge-window) (67108989 . helm-narrow-window) (19 . helm-minibuffer-history) (24 keymap (57 . helm-execute-selection-action-at-nth-+9) (56 . helm-execute-selection-action-at-nth-+8) (55 . helm-execute-selection-action-at-nth-+7) (54 . helm-execute-selection-action-at-nth-+6) (53 . helm-execute-selection-action-at-nth-+5) (52 . helm-execute-selection-action-at-nth-+4) (51 . helm-execute-selection-action-at-nth-+3) (50 . helm-execute-selection-action-at-nth-+2) (49 . helm-execute-selection-action-at-nth-+1) (2 . helm-resume-list-buffers-after-quit) (98 . helm-resume-previous-session-after-quit) (6 . helm-quit-and-find-file)) (11 . helm-previous-line) (67108896 . helm-toggle-visible-mark) (0 . helm-toggle-visible-mark) (C-M-up . helm-scroll-other-window-down) (C-M-down . helm-scroll-other-window) (M-prior . helm-scroll-other-window-down) (M-next . helm-scroll-other-window) (12 . helm-recenter-top-bottom-other-window) (15 . helm-next-source) (10 . helm-next-line) (9 . helm-execute-persistent-action) ...) nil nil "/home/Reload" t)
  helm-read-pattern-maybe("Find files or url: " "/home/" nil nil nil "/home/Reload" nil)
  helm-internal(helm-source-find-files "/home/" "Find files or url: " nil nil "*helm find files*" nil "/home/Reload" nil)
  apply(helm-internal (helm-source-find-files "/home/" "Find files or url: " nil nil "*helm find files*" nil "/home/Reload" nil))
  helm(helm-source-find-files "/home/" "Find files or url: " nil nil "*helm find files*" nil "/home/Reload" nil)
  apply(helm (helm-source-find-files "/home/" "Find files or url: " nil nil "*helm find files*" nil "/home/Reload" nil))
  helm(:sources helm-source-find-files :input "/home/" :case-fold-search smart :preselect nil :ff-transformer-show-only-basename t :default "/home/Reload" :prompt "Find files or url: " :buffer "*helm find files*")
  helm-find-files-1("/home" nil)
  helm-find-files(nil)
  funcall-interactively(helm-find-files nil)
  call-interactively(helm-find-files nil nil)
  command-execute(helm-find-files)