> For the complete documentation index, see [llms.txt](https://cover-docs.diffblue.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cover-docs.diffblue.com/features/output-codes/working-with-output-codes/working-with-code-r006.md).

# Working with code R006

**R006 - Static initializer failed**

A static initializer threw an exception while trying to load a class. Make sure static initializers can be executed without throwing exceptions.

## eLearning

{% embed url="<https://youtu.be/99KQnT0Wqqw>" %}