Inkscape keeps crashing saying internal error when I try to make a new document from templates (seamless patterns) on my Mac. I have uninstalled and reinstalled but it still says that error. How can I fix it?

You can't, it's an known issue. I will upload the template here later.

Ok thank you

Maybe this will help you.

https://inkscape.org/forums/beyond/seamless-pattern-template-crashes-inkscape/

The search widget in this forum is flawed, to put it mildly.  It took some time to find this link.

Here´s the original template including instructions: