SaberFaction 1.9.1-BETA Error on Disable

[22:51:42 INFO]: [Factions] Disabling Factions v1.6.9.5-U0.2.1-1.9.1-BETA
[22:51:42 ERROR]: Error occurred while disabling Factions v1.6.9.5-U0.2.1-1.9.1-BETA (Is it up to date?)
org.bukkit.plugin.IllegalPluginAccessException: Plugin attempted to register task while disabled
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftScheduler.validate(CraftScheduler.java:518) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftScheduler.runTaskTimer(CraftScheduler.java:197) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftScheduler.runTaskTimer(CraftScheduler.java:188) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftScheduler.runTaskLater(CraftScheduler.java:152) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftScheduler.runTask(CraftScheduler.java:121) ~[patched_1.14.4.jar:git-Paper-176]
        at com.massivecraft.factions.zcore.persist.MemoryFPlayer.updatePower(MemoryFPlayer.java:623) ~[?:?]
        at com.massivecraft.factions.zcore.persist.MemoryFPlayer.getPower(MemoryFPlayer.java:570) ~[?:?]
        at com.massivecraft.factions.zcore.persist.MemoryFPlayer.getPowerRounded(MemoryFPlayer.java:592) ~[?:?]
        at com.massivecraft.factions.zcore.persist.json.JSONFPlayer.shouldBeSaved(JSONFPlayer.java:23) ~[?:?]
        at com.massivecraft.factions.zcore.persist.json.JSONFPlayers.forceSave(JSONFPlayers.java:59) ~[?:?]
        at com.massivecraft.factions.zcore.persist.json.JSONFPlayers.forceSave(JSONFPlayers.java:53) ~[?:?]
        at com.massivecraft.factions.zcore.MPlugin.onDisable(MPlugin.java:187) ~[?:?]
        at com.massivecraft.factions.FactionsPlugin.onDisable(FactionsPlugin.java:427) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:373) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:453) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:439) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:432) ~[patched_1.14.4.jar:git-Paper-176]
        at org.bukkit.craftbukkit.v1_14_R1.CraftServer.disablePlugins(CraftServer.java:401) ~[patched_1.14.4.jar:git-Paper-176]
        at net.minecraft.server.v1_14_R1.MinecraftServer.stop(MinecraftServer.java:727) ~[patched_1.14.4.jar:git-Paper-176]
        at net.minecraft.server.v1_14_R1.DedicatedServer.stop(DedicatedServer.java:739) ~[patched_1.14.4.jar:git-Paper-176]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:960) ~[patched_1.14.4.jar:git-Paper-176]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]