[Server thread/ERROR]: [ScoreboardStats] Error creating database

[KingdomsMineMC]

[Server thread/INFO]: [ScoreboardStats] Enabling ScoreboardStats v0.10.6
[Server thread/INFO]: [ScoreboardStats] Registered replacers: [BungeeCordVariables, PlayerPingVariable, BukkitGlobalVariables, GeneralVariables, BukkitVariables]
[Server thread/INFO]: HikariPool-1 - Starting...
[Server thread/INFO]: HikariPool-1 - Start completed.
[Server thread/ERROR]: [ScoreboardStats] Error creating database
java.lang.IllegalStateException: The configuration of the pool is sealed once started. Use HikariConfigMXBean for runtime changes.
at com.zaxxer.hikari.HikariConfig.setMaximumPoolSize(HikariConfig.java:241) ~[SkinsRestorer-13.5.2.jar:?]
at com.github.games647.scoreboardstats.pvpstats.Database.setupDatabase(Database.java:327) [ScoreboardStats.jar:?]
at com.github.games647.scoreboardstats.ScoreboardStats.onEnable(ScoreboardStats.java:105) [ScoreboardStats.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:422) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:383) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot-1.12.2.jar:git-Spigot-e8ded36-acbc348]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]