Game Error - Ur Dragon and Hellkite Courser

Not sure if this is a known issue. But when the AI plays as Ur Dragon and tries to play Hellkite Courser through the Ur Dragon's attacking effect it triggers a game error. I have copy and pasted it here.

Game exception occurred: java.lang.IllegalStateException: Target wasn't handled in computer's choose method: mage.target.TargetCard
Server version: 1.4.51-V4-beta7 (build: 2022-07-09 15:21)
mage.player.ai.ComputerPlayer.choose(ComputerPlayer.java:499)
mage.player.ai.ComputerPlayer.choose(ComputerPlayer.java:126)
mage.cards.h.HellkiteCourserEffect.apply(HellkiteCourser.java:87)
mage.abilities.AbilityImpl.resolveMode(AbilityImpl.java:201)
mage.abilities.AbilityImpl.resolve(AbilityImpl.java:185)
mage.abilities.TriggeredAbilityImpl.resolve(TriggeredAbilityImpl.java:149)
mage.game.stack.StackAbility.resolve(StackAbility.java:89)
mage.game.GameImpl.resolve(GameImpl.java:1618)
mage.game.GameImpl.playPriority(GameImpl.java:1544)
mage.game.turn.Step.priority(Step.java:61)
mage.game.turn.Phase.playStep(Phase.java:184)
mage.game.turn.Phase.play(Phase.java:89)
mage.game.turn.Turn.play(Turn.java:132)
mage.game.GameImpl.playTurn(GameImpl.java:1042)
mage.game.GameImpl.play(GameImpl.java:952)
mage.game.GameImpl.start(GameImpl.java:928)
mage.server.game.GameWorker.call(GameWorker.java:34)
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)

The error is then rolled back and if Courser is the only dragon in hand it repeats this error until I stop the game.

Reproduce the Ur Dragon attack trigger with Hellkite Courser, then start with mage/cards/h/HellkiteCourser.java:87 and mage/player/ai/ComputerPlayer.java:499 from the stack trace. Trace how the AI handles the TargetCard choice and verify that Courser resolves without the exception or repeated rollback.

Written by the indexing model from the issue text.