Error when creating simple custom webpage

Hello,

I'm trying to create a very simple new custom webpage, basically just a title and some text. I am getting the error below when I try to save. I've tried this in both a Firefox and Chrome browser, but get same message. I have tried adding some formatting of the text in hope that the page will be recognized as a page and not a link. I checked the HTML source, and everything looks fine. However, nothing I seem to do will prevent this error.

You have errors in your form below. Please scroll down and correct the following:
If entering a Custom Link, what you have entered in the content area is not a valid URL/address.

Please advise . . . I cannot see anything that I may be doing incorrectly. Thanks!

Check what you have put as the "Web Page Name" that it has no spaces or special characters.

You need to fill out all the boxes when creating a custom page, Web Page Title / or Link Title, Web Page Name, Web Page Description, etc

OK thanks . . . I wasn't putting in a description. Once I did that, then I had no problem.