Hi,
Found the issue.
As you expected, the issue comes with Gutenify plugin.
I’ll have to wait for an updated version or remove from my project.
Thank you for your support!
Hi,
Error still persist. Seems not depends from “Failed to load resource” error, since other pages that not use Stackable have same error but works well. I don’t know if it depends on the latest wordpress updates, but I must confess that I’m very worried because if I don’t solve it I’ll have to correct at least a hundred pages (including the home page of the site!)