DatasmithSDK get GC lock error

I’m using DatasmithSDK to make a Datasmith export plug-in for other software, and when I use DatasmithSDK’s export function, I will get an error.
From a look at it, it looks like the GC lock singleton failed to be acquired while adding GC locks with FGCScopeGuard .
What should I do,any ideas,thank you.

I get it,i forgot to initialize the core engine systems with FDatasmithExporterManager::Initialize().