Hi! Got this error when trying to join a server I've been playing on all day just fine. Game crashed suddenly, and when I tried to rejoin, this error kept popping up on the host's side. Have tried restarting the server + game, reinstalling the mod, and verifying integrity of files. Thanks!

java.lang.NullPointerException: Cannot invoke "rpgclasses.data.PlayerData.getInUseActiveSkillSlot()" because "<local8>" is null
at necesse.entity.mobs.Mob.mount(Mob.java:2547)
at necesse.entity.mobs.Mob.mount(Mob.java:2515)
at necesse.entity.mobs.Mob.updateMount(Mob.java:2552)
at necesse.entity.mobs.Mob.applyMovementPacket(Mob.java:512)
at necesse.entity.mobs.PlayerMob.applyMovementPacket(PlayerMob.java:543)
at necesse.entity.mobs.Mob.applySpawnPacket(Mob.java:452)
at necesse.entity.mobs.itemAttacker.ItemAttackerMob.applySpawnPacket(ItemAttackerMob.java:98)
at necesse.entity.mobs.PlayerMob.applySpawnPacket(PlayerMob.java:511)
at necesse.engine.network.client.ClientClient.applyGeneralPacket(ClientClient.java:220)
at necesse.engine.network.client.ClientClient.<init>(ClientClient.java:32)
at necesse.engine.network.client.Client.applyPlayerGeneralPacket(Client.java:689)
at necesse.engine.network.packet.PacketPlayerGeneral.processClient(PacketPlayerGeneral.java:88)
at necesse.engine.network.NetworkPacket.processClient(NetworkPacket.java:239)
at necesse.engine.network.client.Client.lambda$frameTick$4(Client.java:255)
at necesse.engine.gameLoop.tickManager.PerformanceTimerManager.recordPerformance(PerformanceTimerManager.java:113)
at necesse.engine.gameLoop.tickManager.Performance.record(Performance.java:10)
at necesse.engine.network.client.Client.lambda$frameTick$5(Client.java:254)
at necesse.engine.gameLoop.tickManager.PerformanceTimerManager.recordPerformance(PerformanceTimerManager.java:113)
at necesse.engine.gameLoop.tickManager.Performance.record(Performance.java:10)
at necesse.engine.network.client.Client.frameTick(Client.java:245)
at necesse.engine.state.MainGame.lambda$frameTick$10(MainGame.java:471)
at necesse.engine.gameLoop.tickManager.PerformanceTimerManager.recordPerformance(PerformanceTimerManager.java:113)
at necesse.engine.gameLoop.tickManager.Performance.record(Performance.java:10)
at necesse.engine.state.MainGame.frameTick(MainGame.java:470)
at necesse.engine.gameLoop.ClientGameLoop.lambda$update$5(ClientGameLoop.java:78)
at necesse.engine.gameLoop.tickManager.PerformanceTimerManager.recordConstantPerformance(PerformanceTimerManager.java:121)
at necesse.engine.gameLoop.tickManager.Performance.recordConstant(Performance.java:20)
at necesse.engine.gameLoop.ClientGameLoop.update(ClientGameLoop.java:76)
at necesse.engine.gameLoop.tickManager.TickManager.tickLogic(TickManager.java:98)
at necesse.engine.gameLoop.GameLoop.runMainGameLoop(GameLoop.java:24)
at necesse.engine.loading.ClientLoader.startGame(ClientLoader.java:386)
at necesse.StartPlatformClient.start(StartPlatformClient.java:15)
at StartSteamClient.main(StartSteamClient.java:6)