Why Did This Happen?
For whatever reason, the page didn't save correctly. There may have been an interruption in your internet when you saved the page.
It seems to happen randomly but only occasionally.
How Can I Prevent This From Happening?
Always check you pages after you save them. Testing is good idea whenever you make changes to your website.
If you check your pages after you edit them, you'll quickly notice the problem and be able to fix it quickly. Simple save the page again, and the problem should go away.
It didn't work. It's a blank screen even inside PageBuilder. What Now?
Give us a call. If the problem happened within the last few days, our system administrator may be able to restore the lost page for you.