Unable to upload model in week1

when uploading model the slide bar of uploading progress goes a little forward and suddenly it stops

Dear @Samaneh_Eslamifar,

Try again after clearing the cache.

Let me know if still face issues.

Thanks for your response
would you plaese explain which part you mean i should clear cash?

Clear the browser cache.

The same problem exists

Is there any other way to upload my model ?