Could it maybe be a duplicate function name used in the lib? Unreal doesn’t normally allow the use if of namespaces so maybe it’s an already defined error that is triggered just silently?
Also the module itself has it’s own loading phase. if you set it to
"LoadingPhase": "Default",
then that might counteract the plugin loading phase or maybe it too has to match the preDefault? Not sure what the module is set at at the moment.