The home button is a custom button. You should be able to download the demo if you would like to use it. By default, the RPG Maker button set did not include a home icon so I had to make one for this plugin.
Can you open dev tools (F8 in game), switch to the console tab in the window that opens up, and show the console view of the error? I am not able to reproduce the issue. You could also try downloading the demo and opening it in-editor to see how things were set up there.
If you would like, you can also come into the Discord for quicker troubleshooting the issue, it might be easier than through itch comments: https://discord.gg/Gbx7JXP