I'm installing the components of ArcGIS Enterprise. I've installed Portal, Server, and I've configured both with WebAdaptor. After completing the installation of these components, I federated Server with Portal. Everything seems to be working correctly up to this point; however, I am getting an error when I finish the configuration of Data Store. I've attached the error message. It's indicating that "Registration of database" was incomplete. And that it "Failed to get connection string from System/PublishingTools GP service". Have others had this issue before? I'm relatively new to Enterprise, so any help would be greatly appreciated in terms of interpreting this error.