CORS Saving errors and projects can't be completed

[pkdvalis]

Can you open the dev console of the browser and see if there are errors like this?

Cors Error While Saving Challenge

I got error while saving the last project. [Screenshot 2025-08-27 164150] The project was succeed, it said that everything was expected but when the project wasn’t saved, it was still marked as uncompleted project. Please help me. Thankyou!