js throws exception in Jupyter browser after loaded the vim-binding pulgin

dahakawang commented 7 years ago

Summary

the plugin failed to load and with exception, and binding not working.

Loading extension: vim_binding/vim_binding
shortcuts.js?v=20170625214631:161 Uncaught (in promise) TypeError: Cannot read property 'data' of undefined
    at Object.attach (shortcuts.js?v=20170625214631:161)
    at Object.attach (vim_binding.js?v=20170625214631:63)
    at vim_binding.js?v=20170625214631:58
    at <anonymous>

Environment

[ ] Operating system : Ubuntu 14.04
[ ] Web browser : Chrome 54.0.2840.100(64-bit) / Firefox 34.0
[ ] Version or revision of Jupyter Notebook : 4.2.1
[ ] Revision of jupyter-vim-binding : bf8c5035b546d51f03f7c730f74535013e038ee4 I ran Jupyter backend and browser on different workstations

Behavior

binding not working

Expected

binding should work

Actual

not working, and can see exception throws in the broswer console

Step by step procedure

nothing special, installed the plugin, and it's just not working when opened jupyter

What you have done to solve the issue

Both FF and chrome has the same issue

Remarks

part of the contexts before it throws: as you can see, somehow km.config is undefined, so next statement will cause exception throw. not familiar with the code base, really appreciate if you guys can help to troubleshooting. I can provide any information regarding this for further investigation...

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