When editing the filter widget, I can't save the setting, because it keeps telling me the label exists. Even if I configure a new filter widget I get this result. This didn't happen before I added a second layer, which I have now removed. After removal, I still get the same message.
What can I do to solve this?
Laura, were you able to resolve this issue? I am getting the exact same "Label exists" error when I try to configure the Search widget in Web App Builder.
I'm experiencing this issue frequently in the Infographics template of WAB Product version: Online 7.1 / Kernel version: 2.12. It has been present in (at least) the Query widget and the About widget.
It is primarily in Google Chrome, and occurs when you've made some significant changes to the widget.
The workarounds I've used:
I've been having this same issue and it seems to be related to the "Widget Label" at the top. If you have saved a configuration under a specific label name, then go back in to change configuration, it appears to think you are trying to duplicate a label name and doesn't allow it.
I've gotten around this by just adding a space to the end of it and then saving widget configuration. Definitely a bug that Esri needs to look into.