Cannot be able to open my project

I cannot be able to save, export or open my project it is showing like this,

I also have problem when I export .aisa file and reinstall it, the problem persisted.

Your project is broken

How can i fix it and why this kind of errors will shown?

By downloading your project and manually editing it…

Idk

I troubleshoot with all the methods
but all are helpless, instead of it i created a new project with my sweat and my hard work.

I hardly think you know all the methods that can be used to fix the project

Yes idk about them