my site have some error. but I don't know why.

enter image description here

Uncaught (in promise) TypeError: Cannot read property 'getNotificationManagerImpl' of undefined

This error occurs in admin post-edit page. I don't know exactly when this error occurs. Does anyone have some ideas about this?

  • what is your current wordpress version??
    – DHL17
    Commented Jan 10, 2018 at 6:33
  • my wordpress version is 4.9.1. and I am using it on localhost.
    – JJang
    Commented Jan 10, 2018 at 6:44
  • 1
    You need to re-install the wordpress to overcome this error and visit this : github.com/tinymce/tinymce/issues/3947
    – DHL17
    Commented Jan 10, 2018 at 6:54
  • first of all, this is not the only error of me. thanks.
    – JJang
    Commented Jan 10, 2018 at 7:09


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