The Categories Images Plugin allow you to add image with category or taxonomy.
Maintained alternatives you can try now
Active on WordPress.org, updated in the last 18 months, and doing the same job. Each one opens in a live sandbox.
About Category and Taxonomy Image
The Category and Taxonomy Image Plugin is a tool that allows you to add images to your category or taxonomy. You can use a function in your templates to retrieve the image URL for a specific category or term. The plugin is easy to use and can be customized based on your needs.Changelog
This is first version no known errors found