I am running Joomla 3.7.5 with a newly installed Purity III template. I could not get the demo to install in the quickstart package, I kept getting an error. Could you please install the Corporate layout. I couldn’t follow the instructions because I can’t get the quickstart package to install.
Quickstart package does not install on a pre installed Joomla.
You can to download and install it separately like any fresh Joomla installation.
Kindly follow this documentation to install the quickstart package.