Completed the Technical documentation page while refresh the page project is not saving!

I completed the technical documentation page project the steps which are given I passed all of them when I paste the link, the project is passing but while I refresh the page project can’t save.

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36

Challenge: Build a Technical Documentation Page

Link to the challenge: