Following the installation instructions, I can install the T4 framework, JA ACM module, and the JA Extension Manager component. But I get an error on installing the template itself ja-purity-iv-j6.zip
Warning
JInstaller: :Install: Can't find Joomla XML setup file.
The Joomla package cannot be installed through the Extension Manager. Please use the Joomla! Update component to update Joomla.
Running Joomla 5.4.0
