Page crashed after class framework update – please help

Hi Enfold suport team

I tried using Instagram widget and saw it wasn’t working. Then I checked your forum and found solution to change class-framework-widgets.php file at my server to this one: https://www.dropbox.com/s/k0te522ilwdcpik/class-framework-widgets.php?dl=0
So I did that… And my page crashed – here it is: http://www.vengatravel.pl.

NOW PAGE IT CRASHED AND I DON’T KNOW WHAT TO DO…

Any ideas how can I fix that? Thanks

Best, Ewa