Error with Version 2.2.0

[19:02:22] [Server thread/ERROR]: Could not load 'plugins/Graveyards-2.2.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Cannot find main class `net.elseland.xikage.Graveyards.Graveyards'
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:66) ~[spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
at...

Error with Version 2.2.0