ERROR: Invalid UI node

My flow suddenly started throwing an error “Invalid UI node”
It shows no other information besides the error message.
Everything worked fine last week, now every single UI selector inside my target application throws this error.

Hi,

May i know which browser are you using.

Hi,
It’s not in a browser but a locally installed application.

if it is internal application we have to check like is there any security policy in your organization that is not allowing us to get the properties. dud you try use developer tools to get the properties/selectors from your internal applications.

I did some more troubleshooting and it appears other elements do not have the issue the error element has.
The element has a “wait for ready” COMPLETE Target, but throws the error immediately after the previous activity.
See screenshot attached for the UI Explorer settings of the activity.