What Causes the Error?
The "Undefined" error occurs after the system has automatically logged you out due to a long period of inactivity. Upon clicking "Save Changes" you will see the following error:
What to Do
Note: It is recommended that you copy your content into a document on your computer before following the next steps to ensure you will not lose your edited content.
- Sign out of your site by hovering over your name or email address in the upper-right menu and select "Sign Out" from the drop-down menu.
- Log back in and you will be able to make and save edits once again.