There is an issue with Sketch and the zeroheight plugin for users using an M1 mac (released from November 2020).
Enabling the plugin will cause Sketch to crash, this is linked to the Webview, Sketch is aware of the issue and a fix will be released in Sketch version 71.
In the mean time we have a workaround for this, which will allow you to still upload to zeroheight.
- Close Sketch if it's open
- Open Finder > Applications
- Select the Sketch app, then go to File > Get Info in the menu bar or press Command+I on your keyboard
- Check the box 'Open using Rosetta'
- Launch Sketch
Any questions just let us know.