ein: [info] Failed to save notebook

[troisquatre]

Check list

• Read the "Avoiding Common Emacs Traps" section in
  https://github.com/millejoh/emacs-ipython-notebook/blob/master/CONTRIBUTING.md
• Does IPython works from the web browser?
• Confirm the problem was not due to badly compiled
  files by removing all the *.elc files from source directory of EIN and
  its dependencies.
• Confirm that the libraries are loaded as expected and are at the required version.
  (You can check the location in the "System info" section below)

Description of the problem you have

I'm using Windows 10, Emacs 26.1, IPython 7.2.0, and ein 20190228.2008. C-x C-s gives the error: ein: [info] Failed to save notebook! . I'm able to save the files through the web interface.

As per #175, I tried changing the permissions of the files, but I can't chmod ug=rw files on Windows.

Steps to reproduce the problem

1. Open Anaconda Prompt
2. run activate py37
3. From within the prompt, I launch Emacs
4. C-x C-f <the notebook>
5. C-c C-o and click open in the relevant directory
6. Make changes and then C-x C-s

Expected output

File saved (I guess).

Your EIN configuration (in .emacs.d/init.el or somewhere else)

;; package
(require 'package)
(add-to-list 'package-archives
'("melpa" . "http://melpa.milkbox.net/packages/") t)
(add-to-list 'package-archives
'("marmalade" . "http://marmalade-repo.org/packages/"))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(let* ((no-ssl (and (memq system-type '(windows-nt ms-dos))
(not (gnutls-available-p))))
(proto (if no-ssl "http" "https")))
(when no-ssl
(warn "
Your version of Emacs does not support SSL connections,
which is unsafe because it allows man-in-the-middle attacks.
There are two things you can do about this warning:

1. Install an Emacs version that does support SSL and be safe.
2. Remove this warning from your init file so you won't see it again."))
   ;; Comment/uncomment these two lines to enable/disable MELPA and MELPA Stable as desired
   (add-to-list 'package-archives (cons "melpa" (concat proto "://melpa.org/packages/")) t)
   ;;(add-to-list 'package-archives (cons "melpa-stable" (concat proto "://stable.melpa.org/packages/")) t)
   (when (< emacs-major-version 24)
   ;; For important compatibility libraries like cl-lib
   (add-to-list 'package-archives (cons "gnu" (concat proto "://elpa.gnu.org/packages/")))))
   ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(package-initialize)

(custom-set-variables
;; custom-set-variables was added by Custom.
;; If you edit it by hand, you could mess it up, so be careful.
;; Your init file should contain only one such instance.
;; If there is more than one, they won't work right.
'(package-selected-packages
(quote
(package+ markdown-mode+ requirejs smartrep python-mode markdown-mode ipython-shell-send jupyter request-deferred tornado-template-mode ipython ein))))
(custom-set-faces
;; custom-set-faces was added by Custom.
;; If you edit it by hand, you could mess it up, so be careful.
;; Your init file should contain only one such instance.
;; If there is more than one, they won't work right.
)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'ein)
(require 'ein-notebook)
(require 'ein-subpackages)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Your IPython configuration

1. What is your IPython version? (run ipython --version): 7.2.0

2. How do you start IPython? (e.g., ipython notebook --port 9999):

3. What is your IPython notebook port number or URL?:

Additional information (if any)

From #175: I tried: ein:byte-compile-ein. No change in results. ein:list-available-kernels 8888 doesn't exist in my installation.
From #178: Attached is whatever I could log.

System info:

("EIN system info"
 :emacs-version "GNU Emacs 26.1 (build 1, x86_64-w64-mingw32)
 of 2018-05-30"
 :emacs-bzr-version "07f8f9bc5a51f5aa94eb099f3e15fbe0c20ea1ea"
 :window-system w32
 :emacs-variant nil
 :os
 (:uname nil
	 :lsb-release nil)
 :image-types
 (svg png gif tiff jpeg xpm xbm pbm)
 :image-types-available
 (svg png gif tiff jpeg xpm xbm pbm)
 :request
 (:backend curl)
 :ein
 (:version "0.15.0-20190222.1528"
	   :source-dir "c:/Users/digby/AppData/Roaming/.emacs.d/elpa/ein-20190222.1528/")
 :lib
 ((:name "websocket"
	 :path "~/.emacs.d/elpa/websocket-20180423.16/websocket.elc"
	 :featurep t
	 :version-var websocket-version
	 :version "1.9")
  (:name "request"
	 :path "~/.emacs.d/elpa/request-20181129.1138/request.elc"
	 :featurep t
	 :version-var request-version
	 :version "0.3.0")
  (:name "auto-complete"
	 :path "~/.emacs.d/elpa/auto-complete-20170125.245/auto-complete.elc"
	 :featurep t
	 :version-var nil
	 :version nil)
  (:name "popup"
	 :path "~/.emacs.d/elpa/popup-20160709.1429/popup.elc"
	 :featurep t
	 :version-var popup-version
	 :version "0.5.3")
  (:name "python"
	 :path
	 "c:/Users/digby/MyEmacsInstallation/share/emacs/26.1/lisp/progmodes/python.elc"
	 :featurep t
	 :version-var nil
	 :version nil)
  (:name "python-mode"
	 :path "~/.emacs.d/elpa/python-mode-20181223.1933/python-mode.elc"
	 :featurep nil
	 :version-var nil
	 :version nil)
  (:name "markdown-mode"
	 :path "~/.emacs.d/elpa/markdown-mode-20181229.1430/markdown-mode.elc"
	 :featurep t
	 :version-var markdown-mode-version
	 :version "2.4-dev")
  (:name "smartrep"
	 :path "~/.emacs.d/elpa/smartrep-20150509.230/smartrep.elc"
	 :featurep nil
	 :version-var nil
	 :version nil)))

[troisquatre]

Whatever I could log:
Ein_debugLog.txt

[troisquatre]

Any updates?

[millejoh]

First, you should probably go over to https://github.com/millejoh/emacs-ipython-notebook and open an issue over there. This is the original, old, and no-longer-supported repository for ein.

Second, when you try to save it looks like Jupyter is generating a 500 response, which is kind of its way of shrugging arms and saying "I don't know." As mentioned in millejoh/emacs-ipython-notebook#480, the current way to debug is:

1. First issue M-x ein:dev-start-debug. Then reproduce the error.

2. Higher level diagnostics appear in M-x ein:log-pop-to-all-buffer.

3. Lower level diagnostics (the actual curl requests) appear in M-x ein:log-pop-to-request-buffer.

We might also be able to get better info if you run the jupyter server with the --debug option.

[yefeiyu]

as same as you

[yefeiyu]

I found the "File-Save" label is grey.

[wickedjargon]

same issue here.

[wickedjargon]

C-x C-w works.