The preview could not load due to the iframe response being incomplete error

[JvP]

During this beta cycle I’ve been getting a lot of the “The preview could not load due to the iframe response being incomplete” errors when loading up Cornerstone in various browsers. I’m switching between Opera, Brave, and Firefox. It happens when I close the browser and later launch it again. The browser tabs from the previous sessions are maintained so it automatically loads the tabs where I had Cornerstone opened.

Only refreshing the builder makes the error go away.

[kory]

@JvP, I’ve noted this down and we’ll see what might be happening here. It could be the sort of thing that once a sessions is completely ended the tabs just get trashed so the caches are cleared and no lingering data creates an issue like this.

[JvP]

All right. In case it’s helpful, here’s some output from the console from when this occurred:

[kory]

Thank you!