The 413 status code indicates that the request was larger than the server is able to handle, either due to physical constraints or to settings. Usually, this occurs when a file is sent using the POST method from a form, and the file is larger than the maximum size allowed in the server settings.

https://assets.scratch.mit.edu/get_image/.%2E/a5014e8cb22d5081aee4bc991d1bf233.png

idk why this error, my project is just an normal project.

https://stackoverflow.com/questions/18121227/how-to-avoid-request-entity-too-large-413-error

My browser / operating system: Windows 7, Firefox 115.0, No Flash versions detected

خرا

What page was this on?

Yes, I think that's a limit scratch added to prevent people from uploading huge amounts of data (Scratch is a non-profit organisation thus they don't have resources big companies like google, etc. have and even these implemented limits). It's not a bug I think since the limit is known and set to 15MB per upload (projects can still be bigger because you only had a few parts with “save” to the file and not the whole project.)