Problem when opening main.xaml

Hello i had the following error:

Looks like the XAML has been corrupted by an argument or argument name. Try opening the xaml in notepad and removing any arguments - also compare it against a working workflow file to check the syntax.

Hope that helps.

@abdel: I faced a similar issue, it was due to a missing package. I had a custom package and once the source was configured locally the error goes away

I agree with PD2, This issue is happening due to missing packages.

Indeed, Thank you

now i want to know the right send hotkey to hide this in pdf: