error vip wardrobe

6:58:53
 CONSOLE:
[INFO] This server is running CraftBukkit version git-Spigot-8dc4297-adc129a (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
06:58:53
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[INFO] Debug logging is disabled
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[INFO] Server Ping Player Sample Count: 12
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[INFO] Using 4 threads for Netty based IO
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[INFO] Generating keypair
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[INFO] Starting Minecraft server on 185.16.84.47:25865
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[INFO] Set PluginClassLoader as parallel capable
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ERROR]: Could not load 'plugins\wardrobe.jar' in folder 'plugins'
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me/seanliam2000/Wardrobe/Main : Unsupported major.minor version 52.0
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Source) [?:1.7.0]
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java.lang.UnsupportedClassVersionError: me/seanliam2000/Wardrobe/Main : Unsupported major.minor version 52.0
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Method) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Method) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 CONSOLE:
Method) ~[?:1.7.0]
06:58:54
 CONSOLE:
Source) ~[?:1.7.0]
06:58:54
 WorldChat:
Loading WorldChat v1.0
06:58:54
 WarpPortals:
Loading WarpPortals v5.6.3
etc.