"Uncaught TypeError: Cannot read property 'getAttribute' of undefined" There are some posts about this error for Drupal 7, but I'm using Drupal 8.1 and those solutions don't work for D8.

I tried this patch (coded for D7) and doesn't work.

The effect of the error is that QuickEdit doesn't work: sometimes the quick edit link doesn't appears, sometimes it appears but when edit some fields I get error.

Can anybody help?

UPDATE for neograph:
I haven't changed anything about the loading of the javascript. The only thing I did is edit the my_theme.libraries.yml for adding JS plugins:

global-css:
  css:
    theme:
      #css/style.css: { }
      dist/css/style.css: { }

global-js:
  js:
    #js/script.js: { }
    bower_components/slick-carousel/slick/slick.min.js: { }
    bower_components/slicknav/dist/jquery.slicknav.min.js: { }
    bower_components/superfish/dist/js/superfish.min.js: { }
    dist/js/script.js: { }
  dependencies:
    - core/jquery
The problem is in panels module, upgrade to latest version to fix the issue.
For more details see https://www.drupal.org/node/2713123