Boxlang error with no reference back to anything in my code

Hitting our application, and getting this:

Cache [boxlang-miniserver] does not exist. Valid caches are: [Ljava.lang.String;@285da284

I dunno what cache it’s on about.

ortus.boxlang.runtime.types.exceptions.BoxRuntimeException: Cache [boxlang-miniserver] does not exist. Valid caches are: [Ljava.lang.String;@285da284
	at ortus.boxlang.runtime.application.Application.start(
	at ortus.boxlang.runtime.application.ApplicationListener.defineApplication(
	at ortus.boxlang.runtime.context.RequestBoxContext.loadApplicationDescriptor(
	at ortus.boxlang.web.WebRequestExecutor.execute(
	at ortus.boxlang.web.handlers.BLHandler.handleRequest(
	at io.undertow.server.Connectors.executeRootHandler(
	at io.undertow.server.HttpServerExchange$
	at org.jboss.threads.ContextHandler$1.runWith(
	at org.jboss.threads.EnhancedQueueExecutor$
	at org.jboss.threads.EnhancedQueueExecutor$
	at org.xnio.XnioWorker$WorkerThreadFactory$1$
	at java.base/

There is no tag-context provided with the exception. it’s just this:

I’d go have a shufti through our code to find out what’s causing it, but the onApplicationStart got is complicated and convoluted, and it’d be great if BoxLang threw me some sort of bone alone the lines of “I was running this bit of code when it all went tits-up”, like one would normally expect in these situations.

I’ll have a go at bissecting the code to see if I can tie it down a bit more, but am just checking this is not some “oh yeah, the BL compiler will do this if x” sorta thing…?