If you haven't done this before, run this from Terminal:
defaults write com.stairways.keyboardmaestro.engine WebKitDeveloperExtras -bool YES
Then run the VIP, right-click anywhere in the window, and select "Inspect Element".
It's impossible for me to know how it'll come up on your screen, but here's how it looks in mine:
The buttons I've boxed in red, on the left, control whether/how the built-in inspector is docked to my prompt, so mess with them if you need to.
Then click the "Console" tab I've marked in the red box on the right.
Once you've done that, click the Reload button. You may need to resize things to see the button, or even detach the built-in inspector from the prompt.
if it doesn't reload the data, I'm hoping it'll display something interesting in the console log.
Let me know. Thanks, by the way!