ORG can't export project,Please help me!

I have a ORG project and I can’t export it ,the explore always shows me the error image.
But I can export the new empty project .Is there something wrong?

when I request to export My project ,the web explore giveback this code like this :

here is the url:

Please help me ,thank you

The project is private. Can you make it public please?


It looks like some of your project images are missing. Can you upload a new project image? Then it should work.

Unbelievable !
The reason why I can’t export my project is that I don’t set the project image correctly,
then I set a new image ,it works well. now I can export my org project .
I have tried many times to solve this problem,but don’t work
Really thanks !