error:

[18:27:24] [Server thread/ERROR]: Could not load 'plugins\MPPlayerInfo(1.6.0).jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/flags/registry/FlagConflictException
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:139) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:394) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:301) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.craftbukkit.v1_16_R2.CraftServer.loadPlugins(CraftServer.java:381) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at net.minecraft.server.v1_16_R2.DedicatedServer.init(DedicatedServer.java:186) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:808) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at net.minecraft.server.v1_16_R2.MinecraftServer.lambda$0(MinecraftServer.java:164) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]
Caused by: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/flags/registry/FlagConflictException
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_261]
	at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_261]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	... 7 more
Caused by: java.lang.ClassNotFoundException: com.sk89q.worldguard.protection.flags.registry.FlagConflictException
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_261]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:167) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:96) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_261]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_261]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_261]
	at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_261]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot-1.16.2.jar:git-Spigot-b5a13e6-0d8350a]
	... 7 more