This error was triggered by having this configuration setting in your {{exception.EnvironmentName}} environment,
and deploying a content item with a name ending with <value>
:
<settings> <deploy kabum="<value>" /> </settings>
This is used for debugging exceptions & errors and should normally not appear unless you are debugging something. You can disable it by removing the "kabum" attribute from the UmbracoDeploy.settings.config file in ~/config of your site.
The following artifacts might be involved: