Hey there. Me and my friend were trying to play Library of Ruina mod in multiplayer, with Together in Spire. But as soon as we both select the Librarian character the game crashes with the following log:

"Game crashed.
Version Info:
- Java version (1.8.0_144)
- Slay the Spire (12-18-2022)
- ModTheSpire (3.30.3)
Mod list:
- basemod (5.54.1)
- stslib (2.11.0)
- spireTogether (6.4.19)
- Library of Ruina (1.1.6)
- Library of Ruina Extra (1.1.1)

Mods in stacktrace:
- Library of Ruina (1.1.6)
Cause:
java.lang.NullPointerException
at lor.relic.PageOfLibrarian.resetImg(PageOfLibrarian.java:573)
at lor.character.Librarian.loadPlayerImg(Librarian.java:400)
at lor.character.Librarian.renderPlayerImage(Librarian.java:1696)
at lor.character.Librarian.render(Librarian.java:1680)
at com.megacrit.cardcrawl.rooms.AbstractRoom.render(AbstractRoom.java:609)
at com.megacrit.cardcrawl.neow.NeowRoom.render(NeowRoom.java:38)
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.render(AbstractDungeon.java:2678)
at com.megacrit.cardcrawl.core.CardCrawlGame.render(CardCrawlGame.java:441)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:225)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)"

I am, sadly, not very fluent in code so I don't really understand what is this about. Is the issue fixable at all or is it something that just isn't compatible and there is nothing to be done about it? Any insight would be much appreciated. Thank you in advance.