Installed XStore theme and started to go through Setup Wizard.
Got to the point where it wants me to select a prebuilt website, but I already have a website, just changing themes, so don’t want it importing prebuilt pages.
There is no “skip this step” on that question, so I backed out manually.
When I went to customize, it said I needed to install Core Plugins, but that runs for a few seconds and then fails.
There were a couple of plugins we needed for the old theme, so I deactivated them, and tried again. Failed again.