webView:didFinishLoadForFrame error in macOS Monterey

[Dan Shepherd]

As well as the NSview depreciation error I'm getting the following error message and long hang then time on macOS Monterey - does webkit2png no longer work on Montery?

Python[30894:16270876] *** WebKit discarded an uncaught exception in the webView:didFinishLoadForFrame: delegate: <NSUnknownKeyException> [<DOMAbstractView 0x600001fd8240> valueForUndefinedKey:]: this class is not key value coding-compliant for the key webkit2png.

[Dan Shepherd]

Anything on this?

[Ivan Zolotov]

Same for me on macOS 12.0.0 and 12.0.1.

[K V Sreenath]

Same for me. Anything on this?

@paulhammond : Can you help me out to resolve this.

[Andi Pollok]

+1
Would be great to learn how to fix this issue.