I am very new to Hubitat but I am an experienced Home Automator including, Insteon hub, ISY, Homeseer and other hubs.
I can see that Hubitat is the future so I am diving in. I am at the experimental stage and I am trying to setup a button event but it keep giving me this error (from the logs).
Unexpected Error
An unexpected error has occurred trying to load the app. Check Logs for more information.
Error: Child app not found for namespace: hubitat and name: Button Rule-5.0a
And the log says.
app:1302021-09-12 12:57:03.083 pm errororg.codehaus.groovy.runtime.InvokerInvocationException: hubitat.exception.NotFoundException: Child app not found for namespace: hubitat and name: Button Rule-5.0a (mainPage)
At what point does this error occur? After you've loaded the button controller app and when you're trying to create a new button controller? (Screen shot would be handy if one is readily available.)
Yep, the issue you described has been reported a few times after hub firmware updates that bump the "version"/name of built-in apps (as one of the 2.2.8.x updates did with Button Controller child apps), and a reboot has fixed it in every case I've heard of so far. Glad you got it working!