>.... [13:54:11 ERROR]: Could not pass event AsyncPlayerPreLoginEvent to SkillAPI v3.108
java.lang.IllegalStateException: PlayerSkillUpgradeEvent may only be triggered synchronously.
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:533) ~[patched_1.15.2.jar:git-Paper-67]
at com.sucy.skill.api.player.PlayerData.upgradeSkill(PlayerData.java:707) ~[?:?]
at com.sucy.skill.api.player.PlayerData.autoLevel(PlayerData.java:656) ~[?:?]
at com.sucy.skill.api.player.PlayerData.giveSkill(PlayerData.java:631) ~[?:?]
at com.sucy.skill.api.player.PlayerClass.<init>(PlayerClass.java:87) ~[?:?]
at com.sucy.skill.api.player.PlayerData.setClass(PlayerData.java:1012) ~[?:?]
at com.sucy.skill.data.io.IOManager.load(IOManager.java:146) ~[?:?]
at com.sucy.skill.data.io.ConfigIO.loadData(ConfigIO.java:83) ~[?:?]
at com.sucy.skill.SkillAPI.loadPlayerData(SkillAPI.java:509) ~[?:?]
at com.sucy.skill.listener.MainListener.onLogin(MainListener.java:115) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor424.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.15.2.jar:git-Paper-67]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:76) ~[patched_1.15.2.jar:git-Paper-67]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.15.2.jar:git-Paper-67]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545) ~[patched_1.15.2.jar:git-Paper-67]
at net.minecraft.server.v1_15_R1.LoginListener$LoginHandler.fireEvents(LoginListener.java:311) ~[patched_1.15.2.jar:git-Paper-67]
at net.minecraft.server.v1_15_R1.LoginListener$1.run(LoginListener.java:212) ~[patched_1.15.2.jar:git-Paper-67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
>.... [13:54:11 INFO]: UUID of player _Greenyy is 31a9aea9-a741-461e-abbb-2f361cd34b1c
>.... [13:54:12 INFO]: _Greenyy[/84.136.48.220:57488] logged in with entity id 14894 at ([Lyria]-6969.1646101701, 72.0, 1132.8307507829472)