Together in Spire crash

[TheDanDLion]

What's the mod?
Together in Spire

Is there a problem running FourthKey with another mod?
My friend and I both crashed after attempting to buy the key from the merchant while playing with Together in Spire. Here is our mod list and the crash log:

AchievementEnabler 1.0.0
BaseMod 5.54.1
Downfall 5.1.2
EUI 4.5.3-hotfix03
Minty Spire 2.5.8
StSLib 2.11.0
The Packmaster 2.3.4
The Packmaster: Expansion 1.5.0
Together in Spire 6.4.15
Better Animation 0.2.0
Rare Cards Sparkle 2.2.0
TungstenRodVoiceMod 1.1.0
Chimera Cards 1.0.5
Fourth Key 1.3.9
Hifuu (Merry and Renko) 1.6.8
Marisa: Continued 4.0.6
TiS - Official Booster Pack 1.0.5

05:32:53.991 INFO spireTogether.SpireTogetherMod> �[37mReceived onLobbyChatUpdate callback with Left as the reason and 11000010bb1a15f as target�[37m
05:32:54.007 INFO spireTogether.SpireTogetherMod> �[37monFriendRichPresenceUpdate�[37m
05:32:54.007 INFO spireTogether.SpireTogetherMod> �[37mReceived onPersonaStateChange callback with status GameServer�[37m
05:32:54.008 INFO spireTogether.SpireTogetherMod> �[37mReceived onPersonaStateChange callback with status RichPresence�[37m
05:33:05.274 INFO helpers.CardHelper> Obtained FlurryOfBlows (COMMON). Creating new map entry.
05:33:05.274 INFO unlock.UnlockTracker> Already seen: FlurryOfBlows
05:33:15.395 INFO core.CardCrawlGame> PAUSE()
05:33:22.313 INFO core.CardCrawlGame> RESUME()
05:33:23.856 INFO core.CardCrawlGame> Exception occurred in CardCrawlGame render method!
05:33:23.857 ERROR core.CardCrawlGame> Exception caught
java.lang.ArrayIndexOutOfBoundsException: 3
at spireTogether.patches.network.CreatureSyncPatches$OnKeyCollected.Postfix(CreatureSyncPatches.java:502) ~[TogetherInSpire.jar:?]
at com.megacrit.cardcrawl.vfx.ObtainKeyEffect.(ObtainKeyEffect.java:46) ~[?:?]
at fourthKey.patches.shop.ShopScreenPatch.purchasePurpleKey(ShopScreenPatch.java:46) ~[FourthKey.jar:?]
at fourthKey.patches.shop.ShopScreenPatch.updatePurpleKey(ShopScreenPatch.java:69) ~[FourthKey.jar:?]
at fourthKey.patches.shop.ShopScreenPatch.access$600(ShopScreenPatch.java:27) ~[FourthKey.jar:?]
at fourthKey.patches.shop.ShopScreenPatch$UpdatePurpleKeyPatch.Insert(ShopScreenPatch.java:142) ~[FourthKey.jar:?]
at com.megacrit.cardcrawl.shop.ShopScreen.update(ShopScreen.java:621) ~[?:?]
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.update(AbstractDungeon.java:2587) ~[?:?]
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) [?:?]
05:33:23.873 INFO core.CardCrawlGame> PAUSE()
05:33:23.873 INFO core.CardCrawlGame> Game shutting down...
05:33:23.873 INFO core.CardCrawlGame> Flushing saves to disk...
05:33:23.873 INFO core.CardCrawlGame> Shutting down controller handler...
05:33:23.873 INFO helpers.FileSaver> Save thread interrupted!
05:33:23.874 INFO core.CardCrawlGame> Shutting down publisher integrations...
05:33:23.874 INFO helpers.FileSaver> Save thread will die now.
05:33:23.876 INFO core.CardCrawlGame> Flushing logs to disk. Clean shutdown successful.
05:33:23.893 INFO extendedui.STSEffekseerManager> Terminated STSEffekseerManager

Is there a special interaction you would like added when FourthKey is loaded with this mod?
Probably need a custom compatibility patch