JSON.parse PopUp when I switch from the first Page to other page

Hi ,
My school teachers suggest us to use online visual paradigm for a web design UI exercises.
So I use this for about 7 days using the Bootstrap UI elements and some other shapes and some stock photos in the background (shutterstock previews ) , but something popped up JUST yesterday, a modal window that say " ERROR : JSON.parse: unexpected character at line 1 column 1 of the JSON data " just when i switch between pages others than the first page.
I tried to open VPO in chrome, firefox, internet explorer, but the same problem arise.
BUT when i open an earlier file of the same homework, all the pages works well.
At the moment i stopped the tasks in order to understand if I should pass to other versions of VP.
Can it be solved ? Thanks

Hi relikhunter,

We are sorry for the inconvenience that this issue caused you. This issue has been confirmed and will be fixed as soon as possible. We will inform you once the fix is available.

Best Regards,

Antony.

Hi relikhunter,

I would like to let you know that this issue has been fixed. Once again, we do apologize for the inconvenience that this may have caused you.

Best Regards,

Antony.