[power ranks not working]

it randomly stopped working. here is the log

[09:51:14] [Server thread/INFO]: [PowerRanks] Enabling PowerRanks v1.9.7
[09:51:14] [Server thread/INFO]: [PowerRanks] Checking for updates...
[09:51:14] [Server thread/INFO]: [PowerRanks] 
[09:51:14] [Server thread/INFO]: [PowerRanks] === ----------- LOADING DATA ----------- ===
[09:51:14] [Server thread/INFO]: [PowerRanks] Loading config
[09:51:14] [Server thread/INFO]: [PowerRanks] Loading player data
[09:51:14] [Server thread/INFO]: [PowerRanks] Loading rank data
[09:51:14] [Server thread/INFO]: [PowerRanks] 
[09:51:14] [Server thread/INFO]: [PowerRanks] === ------- LOADING PLUGIN HOOKS ------- ===
[09:51:14] [Server thread/INFO]: [PowerRanks] Checking for plugins to hook in to:
[09:51:14] [Server thread/INFO]: [PowerRanks] NametagEdit found!
[09:51:14] [Server thread/INFO]: [PowerRanks] 
[09:51:14] [Server thread/INFO]: [PowerRanks] === ---------- LOADING ADDONS ---------- ===
[09:51:14] [Server thread/ERROR]: Error occurred while enabling PowerRanks v1.9.7 (Is it up to date?)
java.lang.NullPointerException: null
    at nl.svenar.PowerRanks.Cache.CachedConfig.getBoolean(CachedConfig.java:82) ~[?:?]
    at nl.svenar.PowerRanks.addons.AddonsManager.<init>(AddonsManager.java:25) ~[?:?]
    at nl.svenar.PowerRanks.PowerRanks.onEnable(PowerRanks.java:228) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:380) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:476) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:501) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:415) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:207) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:936) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174) ~[server.jar:git-Paper-"b89788a"]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
[09:51:14] [Server thread/INFO]: [PowerRanks] Disabling PowerRanks v1.9.7
[09:51:14] [Server thread/ERROR]: Error occurred while disabling PowerRanks v1.9.7 (Is it up to date?)
java.lang.NullPointerException: null
    at nl.svenar.PowerRanks.PowerRanks.onDisable(PowerRanks.java:267) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:415) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:509) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:384) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:476) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:501) ~[server.jar:git-Paper-"b89788a"]
    at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:415) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:207) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:936) ~[server.jar:git-Paper-"b89788a"]
    at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174) ~[server.jar:git-Paper-"b89788a"]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]