As of Jully 11th, Mapquest has discontinued access to their free maps. What is the fix for this? This seems like something that needs to be configured within Kibana and associate an API key.
Yup, we discovered this on the 11th. We are tracking the issue here, and there's already a discussion over here. The issue thread includes some workaround for now as well.
We have a fix coming in a release that should be released soon in the 4.1.x and 4.5.x version. We're also looking at possibly backporting the fix into 4.x versions, but that's still being discussed.
Thanks for the reference. Glad y'all are already on it.