NPE from SaddledSourceThisTurnPredicate

This occured during a game of a booster draft tournament with 3 OJT Boosters against bot competition

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

Game error occurred:

java.lang.NullPointerException
Server version: 1.4.54-V3 (build: 2024-09-25 12:58)
Stack trace:
mage.filter.predicate.permanent.SaddledSourceThisTurnPredicate.apply(SaddledSourceThisTurnPredicate.java:21)
mage.filter.predicate.permanent.SaddledSourceThisTurnPredicate.apply(SaddledSourceThisTurnPredicate.java:15)
mage.filter.FilterPermanent.lambda$match$0(FilterPermanent.java:60)
java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90)
java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1359)
java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230)
java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196)
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
java.util.stream.ReferencePipeline.allMatch(ReferencePipeline.java:454)
mage.filter.FilterPermanent.match(FilterPermanent.java:60)
mage.target.TargetPermanent.canTarget(TargetPermanent.java:77)
mage.player.ai.ComputerPlayer.choose(ComputerPlayer.java:243)
mage.player.ai.ComputerPlayer.choose(ComputerPlayer.java:130)
mage.cards.r.RamblingPossumEffect.apply(RamblingPossum.java:88)
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)