Incompatible Archive WordPress Solution

What’s Causing the Error?

The core of the problem lies in the way MacOS compresses zip files and how WordPress 6.4.3 interprets them upon upload. Recent security enhancements aimed at tightening up the upload process inadvertently introduced challenges for MacOS compressed zip files, leading to the dreaded ‘Incompatible Archive’ error message. Similar issues previously affected WordPress and WP-CLI and the behavior ties back to PHP’s _libzip_ version discrepancies.

Use the MacOS Command Line for Compression

Instead of using the MacOS right-click ‘Compress’ option, compress your plugin folder using the terminal. Here’s how:

zip -r my-plugin.zip my-plugin/

(from diviextended.com/incompatible-archive-error-in-wordpress/)