Hi, Marilia. I'm Brazilian too. What is the project about?
Unfortunately the link you sent is inaccessible now. It looks like a URL for website editors so I'd guess it's only accessible inside your office network. Could you please share a screenshot or video of the error?
It might also be useful to have a video showing the procedure to enter the new data. Maybe we help spot a missing comma or other similar unexpected input that the timeline is failing to understand and render.