KeepDeathDrop.jar error log

[23:32:43] [Server thread/ERROR]: Could not load 'plugins/KeepDeathDrop.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: depend is of wrong type
	at org.bukkit.plugin.PluginDescriptionFile.makePluginNameList(PluginDescriptionFile.java:1051) ~[spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at org.bukkit.plugin.PluginDescriptionFile.loadMap(PluginDescriptionFile.java:955) ~[spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at org.bukkit.plugin.PluginDescriptionFile.<init>(PluginDescriptionFile.java:232) ~[spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:159) ~[spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:291) [spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_71]
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Iterable
	at org.bukkit.plugin.PluginDescriptionFile.makePluginNameList(PluginDescriptionFile.java:1047) ~[spigot-BT27.jar:git-Spigot-d0d1d87-bc03b6f]
	... 8 more