Hi,

please see this pull request which got merged: Groovy Script Caller: Class name without dashes by jsok · Pull Request #5 · jenkinsci/configuration-as-code-groovy-plugin (github.com)

Sadly this fix is not available with the versioned official release - latest release of this plugin is from 2019 (see here [Configuration as Code - Groovy Scripting Extension | Jenkins plugin|https://plugins.jenkins.io/configuration-as-code-groovy/])

Without this fix the whole plugin cant be used anymore. So major breakage.

Could you please release a new version? 5 years is a really long time for no release.