服务器后台op不能给 输入op xxx 出现一堆代码

                         ↓
[22:36:23 WARN]: Unexpected exception while parsing console command "op zhai_sox
"
org.bukkit.command.CommandException: Unhandled exception executing command 'op'
in plugin OP-Password-Safe v0.1
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Plu
ginCommand.class:git-Cauldron-Reloaded-1.7.10-1.1388.1.0]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:18
1) ~[SimpleCommandMap.class:git-Cauldron-Reloaded-1.7.10-1.1388.1.0]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServe
r.java:717) ~[CraftServer.class:git-Cauldron-Reloaded-1.7.10-1.1388.1.0]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchServerCommand(Craf
tServer.java:697) [CraftServer.class:git-Cauldron-Reloaded-1.7.10-1.1388.1.0]
        at net.minecraft.server.dedicated.DedicatedServer.func_71333_ah(Dedicate
dServer.java:472) [lt.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated
Server.java:431) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav
a:798) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658) [M
inecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_75]
Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R4.command.
ColouredConsoleSender cannot be cast to org.bukkit.entity.Player
        at op.startop.onCommand(startop.java:48) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Plu
ginCommand.class:git-Cauldron-Reloaded-1.7.10-1.1388.1.0]
        ... 8 more
[22:36:56 WARN]: A manual (plugin-induced) save has been detected while server i

s configured to auto-save. This may affect performance.

卸载op password safe插件后再给op

居然没发现这个插件