ClassCastException in copy applier of Undercover Operative

Error type: SERVER - game error
Client version: 1.4.54-V3 (build: 2024-09-25 12:58)

Game error occurred:

java.lang.ClassCastException: mage.game.permanent.token.EmptyToken cannot be cast to mage.game.permanent.Permanent
Server version: 1.4.54-V3 (build: 2024-09-25 12:58)
Stack trace:
mage.cards.u.UndercoverOperativeApplier.apply(UndercoverOperative.java:59)
mage.abilities.effects.common.CreateTokenCopyTargetEffect.apply(CreateTokenCopyTargetEffect.java:210)
mage.abilities.AbilityImpl.resolveMode(AbilityImpl.java:222)
mage.abilities.AbilityImpl.resolve(AbilityImpl.java:206)
mage.abilities.TriggeredAbilityImpl.resolve(TriggeredAbilityImpl.java:205)
mage.game.stack.StackAbility.resolve(StackAbility.java:85)
mage.game.GameImpl.resolve(GameImpl.java:1805)
mage.game.GameImpl.playPriority(GameImpl.java:1728)
mage.game.turn.Step.priority(Step.java:67)
mage.game.turn.Phase.playStep(Phase.java:205)
mage.game.turn.Phase.play(Phase.java:91)
mage.game.turn.Turn.play(Turn.java:137)
mage.game.GameImpl.playTurn(GameImpl.java:1152)
mage.game.GameImpl.play(GameImpl.java:1059)
mage.game.GameImpl.start(GameImpl.java:1035)
mage.server.game.GameWorker.call(GameWorker.java:35)
mage.server.game.GameWorker.call(GameWorker.java:16)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)