I can't export to ZIP or copy html anymore.

[1xdBen]

So my grapesjs Studio (alpha), everytime I try to copy the code it just shows a black screen (look at picture) where the code is supposed to be. I can copy copy the css but not the html.Any fixes for that or is my site maybe too big (It´s 14 pages)?

I tried to open my code on other browsers and devices like my phone but as soon as I entered my website I couldnt copy anymore.

Export to ZIP:

Import html:

Thanks in advance.