What does duplicate COMDAT mean?

I’m getting an error when packaging in development.

Module.Slate.2_of_5.cpp.obj : fatal error LNK1179: invalid or corrupt file: duplicate COMDAT ‘’

I feel this has to do with some duplicate or truncated file or variable, but I can’t be sure.

Strangely, I can compile fine in Shipping, but I’m having an issue managing a bug, so I want access to the logs. The bug only occurs when the game is packaged. In the editor, the blueprint works as designed.

Does anyone know what this means? I’m using 4.17.1 with flex integration.