Are Lucee's custom class loaders single-threaded or multithreaded?

[bdw429s]

@BK_BK

Java Stacktrace lucee.runtime.exp.CasterException: null can not be casted to a Struct

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[BK_BK]

@bdw429s

Please enter a ticket for this.

Have done: [LDEV-4285] - Lucee