Cause:
java.lang.IllegalArgumentException: n must be positive
at com.badlogic.gdx.math.RandomXS128.nextLong(RandomXS128.java:110)
at com.badlogic.gdx.math.RandomXS128.nextInt(RandomXS128.java:99)
at com.megacrit.cardcrawl.random.Random.random(Random.java:65)
at com.megacrit.cardcrawl.cards.CardGroup.getRandomCard(CardGroup.java:563)
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.getCard(AbstractDungeon.java:1882)
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.getRewardCards(AbstractDungeon.java:1834)
at com.megacrit.cardcrawl.rewards.RewardItem.<init>(RewardItem.java:161)
at com.megacrit.cardcrawl.screens.CombatRewardScreen.setupItemReward(CombatRewardScreen.java:89)
at com.megacrit.cardcrawl.screens.CombatRewardScreen.open(CombatRewardScreen.java:370)
at com.megacrit.cardcrawl.rooms.AbstractRoom.update(AbstractRoom.java:437)
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.update(AbstractDungeon.java:2532)
at com.megacrit.cardcrawl.core.CardCrawlGame.update(CardCrawlGame.java:876)
at com.megacrit.cardcrawl.core.CardCrawlGame.render(CardCrawlGame.java:423)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:225)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)